Metric Measurements

I love Instructables, but I find that I use it less and less lately. The main reason is the need to go through all the instructions and convert all the measurements from the old British system to the metric system that everyone else in the world uses. I do have a plugin for my browser, but it doesn't work on my tablet or phone, which I use more often when building stuff. It's 2017. Literally 95% of the worlds's population uses the metric system, and we have computers. Is it not possible for you guys to knock up a little programming routine that converts all the measurements if I'm in a metric country? I understand this is an American site aimed at an American audience, but it seems you're cutting off a huge number of potential site users here.

Topic by DELETED_PaulL101   |  last reply


Metric Tube Supplier?

Does anyone know of any good steel tubing suppliers. I need a few different sizes, all of which cannot be found at any local hardware store, in square and rectangular shapes. Also, I found one supplier already and they had so many sizes to choose from. But they only ship large quanities to companies, not to the individual. So if anyone knows of any suppliers that can supply the following sizes for a decent price, your help would be very much appreciated. The sizes I need are 40mm square with 2.5mm wall, 25.4mm square with 2.5mm wall, 20mm square with 2mm wall, 40X20mm with 2mm wall, 35X16mm with 1.5mm wall.

Question by bombmaker2   |  last reply


Finding a very special screw

This cross stood on our wedding cake 50 years ago. The cross has three parts: the cross itself, the domed base, and the anchor rod that goes down into the cake. A threaded end on the anchor rod passes through the domed base and into the bottom of the cross. My wife gave me the task of finding a screw to attach the base without the anchor rod so she can stand it on a tabletop.I suspected that the threads are metric because the cross and its parts were made in Germany. Screws at hardware and fastener stores in our good-sized municipality are as small as 4mm, but this is smaller, probably a 3mm screw. I could order half of a dozen on eBay, but they would arrive only days before our guests come for our celebration. If anything did not work, I would be stuck. From photos by eBay vendors I guessed the screw I need is size M3 x 0.5. I poked around on the Internet and learned that M3 x 0.5 screws are frequently used in laptop computers. My laptop has some of those for holding the case together. I borrowed one of them for a couple of weeks until after our guests have gone home. My laptop will not miss the screw for a short time. Keep this in mind if you ever need a screw not available locally. Something you already have may be a suitable short term donor.

Topic by Phil B   |  last reply


Does any one know how to couple a fine thread 6mm bolt to a non-metric one of approximately the same diameter?

I am trying to construct a bike powered blender and need to build a new drive shaft for it. I have plenty of threaded rod to use for the drive shaft, however it is all English and the head of the drive shaft, the piece that locks into the base of the blender and spins the blade, is threaded to fit a 6mm fine thread bolt, of which I've found a short one, but what I really really!! need to be able to do is connect the threaded metric bolt to an English threaded rod. Thanks

Question by swupuws   |  last reply


Best metric drill bit set for metal? Answered

I've switched over to everything metric, but one problem still remains: I can't find metric drill bits. Is there a good set of metric drill bits that are on par with Dewalt's Titanium or Cobalt Drill bits? I mainly work with stainless steel and 6061 aluminum. 

Question by JamesRPatrick   |  last reply


Why do Americans still use the "imperial" system versus the metric system? Answered

I am wondering this because (and this is coming from an American) it just seems so inefficient compared to the metric system. Is it something political? Or is it just abstinence?

Question by www139   |  last reply



What is the average k'nex pieces to weight ratio?

Like taking a random 100 pieces out of a box (assuming that commonness is a factor), and how much it weights. I'd like to know how many I have, but I'm too lazy... lol. Also, pounds or ounces is preferred, but I can find a calc for metric.

Question by DELETED_Gilrostwo   |  last reply


Threading and pitch for Microphone mount nut or stem? Answered

Does anyone out there know the threading and pitch for a standard condenser mic stem? I lost my mounting nut and even the manufacturer won't provide the info I need. It's a Presonus M7. It should have a standard threaded stem as most universal mounts fit it. I know it's metric, Possibly an M20 or M22 with a #1 pitch. Anyone know for sure?

Question by Sparkytastic   |  last reply


Virtual Slide Rule

.  It's random and it's fun. .  Virtual Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION Slide Rule .  A big "Thanks!" to caitlinsdad for the Fn graphic.

Topic by NachoMahma   |  last reply


how/where can I buy natural rubber latex? Answered

Preferably not coagulated, and in quantities under a metric ton. 

Question by WPZhGSKyTOkaYif8   |  last reply


A Carbon Tide: Past, Present and Future

The New York Times has a really nice graph showing the world's historical and projected carbon emissions here at A Carbon Tide: Past, Present and Future Global emissions of carbon dioxide, measured by the weight of carbon it contains.Their choice to display it in flash rather than a similarly-sized image is somewhat annoying, but the chart itself does a nice job presenting a type of data that is often difficult to comprehend. Getting people to truly grasp the size and scale of some of the world's energy issues is one of the key challenges in making progress on those issues. In 2004, 7.9 billion metric tons of carbon were released -- did you make good use of your metric ton?Here's a thought experiment in that same vein: The San Francisco oil spill was originally reported as a 140 gallon spill, but turned out to be approximately 58,000 gallons. How much worse is a 58,000 gallon spill compared to a 140 gallon spill?

Topic by ewilhelm   |  last reply


Feature request: Answers attributions on our profile page

Can we get some kind of metric to show how many Answers we've given? I know I've been helping out a lot by responding to Answers I see in the @askinstructables Twitter feed, but it'd be nice to get some kind of credit for this. Something like "Johntron has answered 27385702375 questions -- he's a BIG help" on my profile page.

Topic by Johntron   |  last reply


can a gas snowblower be converted to an electric motor?

I have an ancient snowblower with a clapped out Tecumseh engine that burns oil faster than gasoline.  Has anyone done a conversion to an electric motor, and is it feasible ie cost of electricity?  Would I need a 220 VAC outlet or could a 110 motor handle the load?  I live in Alberta, and we get a metric butt load of snow.  Thoughts?

Question by kat_man_2   |  last reply


AJAX sliding down converter of units

Hello all, I was browsing, but not limited by, the food instructables and saw that all the measurements were in non-metric values. How would it be if European members can convert cups for milliliters, for example. It would certainly not be difficult to do, but takes some time to get it all working. I know the theory of jQuery but never tried it, so thats why Im saying it. It would help so incredibly much/.

Topic by TT2   |  last reply


HOW CAN I FIND AIR GUN VELCOCITY FROM WIND SPEED? Answered

I need to know how i can make a extact scienctific calculaion of a air gun velocity based on wind speed, requirements so i can even know the laws and regulations of a exact air gun,bb gun,pellet gun,spring gun,and  airsoft guns #1 it must be extact as science #2 show your equation #3 include inperail units and metric OF BOTH  MUZZLE VECOLITY AND MUZZLE ENERGY while keeping it brief of one of only inperial,one only metric and one with a mixture of both or instead of number 3 you can include with just any unit as of that exact unit type for example kilograms and kilograms force,pounds force and foot pounds,kilogram force to joules be sure it inlcude units of joules,foot pounds,newtons, #4 include the wind speed and what the air gun velcoity of the bullet based on wieght and inlcude the amount per each amount of weight and per each amount of wind speed  I KNOW  IT IS  A BIG ASK HOWVER I NEED TO KNOW THE VELOCITY AND FIREPOWER THEN  I CAN EVEN CHECK THE LAWS

Question by 35Timmy   |  last reply


Daylight Savings Time

Don't forget everyone, daylight savings time starts tonight so be sure to "Spring Back" your clocks 1 hour at 2am tonight. And additionally because last year was a leap year when your clock reaches 2am for a second time, spring back an additional hour. If you live in the southern hemisphere the directions should be reversed ie. spring back 2 hours at 1 am. Europeons, please substitute 100 minutes for one hour to account for the metric conversion.

Topic by Tool Using Animal   |  last reply


Which license would you recommend?

I have a new patented item that I would like to publish here. I need to know which license would protect my interests though and since I am new here, I would like to ask you seasoned vets. This is a color coded tool labeling system that will label your wrenches, sockets, drivers and extensions both standard and metric for quicker more precise size identification in all situations. Which license would you recommend?

Topic by toolman58   |  last reply


I can't find an image of John Coburns 'Primordial Garden' anywhere! HELP!! Answered

I've been looking for an image of a painting called 'Primordial Garden' on Google, Dogpile, and various art sites for close to 2 hours now. Additional Details: Medium: Liquer on Hardboard ( that's what my book says, anyway ) Size: 5ft. 2 1/4 ins. x 11ft. 9 3/4 ins. ( not sure how that helps, and i use metric anyway. Meh. )

Question by iTraceur   |  last reply


Looking for Eagle file for standard breadboard power.

Hello;   I am trying to find an Cadsoft Eagle .brd file. I want to plug boards into a standard breadboard, for power. I want to plug onto the thin side. It seems to be a metric measurement, even though it is 0.1" hole spacing. Or if someone has the spacing info for the pins? I measured 4mm on centre, then 40mm to 51mm for the far row. So it would be on the left or right of the breadboard. I always round ground at the outside, and 5v in the middle. So swapping ends will work. Thanks, and I will keep looking Mick M

Topic by MickM 


Machining inside cylinder vs machining thread?

We are working with my kids on CAD project - precisely on a simple pressure valve for DIY confetti launcher. Yesterday question had occured: what is cheaper and easier for hand turner (alternatively cnc machine): to machine a nipple and  then turn a thread on a cylinder or to machine nipple inside cylinder? How much bigger is cost of one of these options?  I prefer turning inside cylinder (no potential problem with sealing), anyway I'm asking this question to more experienced people.   PS: Size is showed in mm. We consider using metric thread.

Question by mdt2170m   |  last reply


Call for pre-made parts!

We're rolling out some new parts for the Kits in 123D Design.  That means you'll soon have some real-world models at your disposal in the Design app, and I wanted to see if there were some specific requests out there for parts that you might use on the regular. I've put in for some tools and hardware - like metric and SAE wrenches and hex bolts - but is there anything that you'd like to see as a part or a template?   M4 screws for an Arduino enclosure? 4" 2-way gate hinges? Eye-Hooks? Light bulbs? Threaded rod? Phone cases?

Topic by andrewt   |  last reply


'Revolutionary' CO2 maps zoom in on greenhouse gas sources

Researchers now have a better view of where carbon dioxide is being emitted thanks to Vulcan, a research project led by Kevin Gurney, an assistant professor at Purdue. This map shows where CO2 is being emitted in the continental United States in 10-kilometer grids and combines data from sources including factories, automobiles on highways and power plants. The map offers more than 100 times the detail of previous inventories of carbon dioxide. The image displays metric tons of carbon per year per grid in a logarithmic base-10 scale.more at Physorg

Topic by ewilhelm   |  last reply


is there anything worthwhile inside an old electrolux vaccuum. cleaner

Helped clean out an apartment and took a couple items home. The electrolux was going to be thrown out, so i took it, now i realize i don't have the room for another vacuum cleaner, it came in a box with all the accessories. the box is big 28x17 inches, i really wish they had changed to metric when i was in 3 or 4th grade and it was a big topic. i go crazy buying SAE bolts and their sized. so anything inside the vac worth liberating, i heard it works, i haven't tried it, i was hoping it was an electrolux with that end piece that i have seen sculptures or steam punk stuff out of

Topic by escapefromyonkers   |  last reply


were can i buy crystal iodine in australia?

I have been looking for some crystal iodine suppliers in australia for quite some time now, but the only ones i can find sell it by the metric ton! there used to be a site called auschem or chemsupply . au that sold it but now i cant find it anymore, and when i search it, al they ever have is car washing stuff or products that you cant buy, i know for a fact there was a site that sold chemicals (othe rthan bargainmart) withoin australia, although with ridiculously high shipping, does anyine know where the site is now? or if theres another site that sells iodine crystals, or at leats potasium iodine cheaply?

Question by oldmanbeefjerky   |  last reply


What is the difference between these screws? Answered

I am trying to fix my RRoD xbox and I can't figure out what kind of screw to use... It might help if I knew what the difference in them were.... I am american and metric makes no scene to me... 5x20MM Panhead Machine Screw 3/16" x 1/2" Panhead Machine Screws 12mm Cheese Head Screws Bonus points if you can find the kind of screw that Microsoft uses and the diameter and thread count, i know for the x-clamp fix it must be 1/2" in length.  Thanks...

Question by awz123   |  last reply


My hood release cable broke off, on my 2001 Corolla.

I intend to jack the car up high and put it on jack stands so I will have some room to get under the rad to get access.  I am a 6ft 250 pound male, so my arms are not skinny or super flexible.  Think forearms like Popeye.  I have a lot of hand tools, including boxend metric wrenchs that click like a socket in as little as 5 degrees.  This is what I think will with some sort of extension handle allow me to unbolt the entire latch assembly.      This will likely be a slow and frustrating process, there has got to be a better way, so handy people show me a better way.  Thanks in advance Phil aka zipperboy, adventureboy7 etc.

Question by zipperboy   |  last reply


Where to buy 6mm brass or stainless steel tubing?

Does anyone know where to buy good lengths of 6mm ID stainless steel or brass tubing?  When I say good length I mean like around 4 feet continuous.  And the tolerance must be very good, in the degree of 0.01mm I've been searching for a while, but getting metric tubing in the US in lengths of anything more than 10 inches or 300cm is hard.  The closest I've found was 6.22mm (which is really 0.2425 inch or something like that), but Ideally I want the ID to be between 6.00 and 6.08 mm and in case if anyone is wondering, I'm building an airsoft sniper, which uses 6mm BB's

Topic by guyfrom7up   |  last reply


How to set thickness of the wall with thread? - confetti launcher

We are working with my kids on CAD project - precisely on a simple pressure valve for DIY confetti launcher. Yesterday we decided to design a thread, which assembles nipple of the valve to the wall . We prefer 1.6 mm wall (0.064 inch) because that saves volume and is enough for 1450psi air in case of stainless stell grade 310 (my son found a piece of SS at home, so we decided to use it). However, I'm afraid that in case of turning a thread there would be a need of redesigning wall thickness.  Question: How much thicker should be a wall for 1450psi (working pressure, pumped air or co2) if we add a thread reinforced with green Loctite (hard glue for threads)? What is optimal metric thread for that pressure?  I would be very grateful for standard, formula or table.

Question by mdt2170m   |  last reply


math fromula

Thought this would be an appropriate place to share some of what i thought was interesting information to do with the area of a triangle and how numbers co-relate. To round off a square to 100cm square, one quarter of that area is 25cm square, (10cmx10cm =100/(div)25%=25cm), the area of a  right angle triangle with sides measuring ~7.0710cm,  equals ~25% of 100cm square,  25cm square of area,  (7.0710/2=3.5355 x7.0710=24.9995205). 7.5937 if it is an equilateral triangle. it is a standard size i use,  a handy measurement if you use templates for construction because it in  some way represents a metric increment, thanks, Kim (the formula i used is half the base times the height,  unless im mistaken i recall that is the correct formula?  though i am not a full time mathamatician.  for the equalateral triangle i used a web based polygon area calculator.)

Topic by QSDR   |  last reply


How do I wire up an arduino, keypad, display to a stepper motor?

I know the basics of how stepper motors work and I'm learning about arduino boards work. How do I connect an arduino board, number pad, and digital display to control distance a nema 23 motor travels on a geared rack? I would like to be able to enter a number on the keypad, such as 12.5, have it show up on the display and then rotate the stepper the appropriate number of steps to equal 12.5". I would assume it would require some sort of calibrate function. I'd also like to be able to use metric as an option. I want to buy some parts to get started, but there is so many different types of boards, keypads and displays, I don't know where to begin.

Question by d-porscheguy   |  last reply


Japan to get 217 mph train

The Shinkansen trains in Japan were already plenty speedy at 188 mph (300 kph), but now they're going to be upgraded to 217 mph (350 kph). I rode the train a few times a while ago and totally loved it. The countryside flew by as you tucked into a bento box. It was great and it was so comfortable.Here in California there's a proposition on the upcoming ballot to pass a bond so that we can have a high-speed rail that takes you from SF to LA in 2.5 hours. I don't have a lot of reasons to go to LA, but when I do it would be nice to avoid playing the airport game (everyone loses!) or the driving game (slow down for the car crashes!). To finally get a high-speed train would be a dream.Going metric would be nice, too. 350 kph sounds much better than 217 mph. Link

Topic by fungus amungus   |  last reply


Will a battery power a short LED light strip drawing 3 amps?

I am building a lighted mirror attached to a pole for conducting searches in tight places.  I have an 8.5" convex mirror which results in just over 25" of circumfrence.  I would like to use the LED light strip linked below to provide light to the area being searched and would like for it to be run off a battery source to make it easily manueverable.  I plan on using 2 ft of the LED rope.  The product specs indicate it should draw 3.0 amps.  Would a AA/series of AA batteries (or another small battery) power this light strip if wired into a switch and a battery pack? http://www.environmentallights.com/Waterproof-Dimmable-Super-Flat-LED-Rope-Light-with-5050-LEDs-60-m-by-the-metric-foot-11-8-inches-300-mm-24-VDC-Daylight-White_P3821.aspx Thanks.

Question by flohrstw   |  last reply


Weekend builder link to account or default to show all on one page

Hi, Love the web site and I love getting the weekend builder emails. Its a minor frustration when I click a link in the email to an article then have to login to see the entire article on one page. Perhaps this minor annoyance is deliberate to ensure users login, or create accounts for user metrics... Is there a way that my email links perhaps are specific for me. So when i click through to your site knows its me maybe with some cookie...? I'm getting theoretical hyperthetical here because I don't really know what I'm talking about.. let me start again.. In the weekend builder email, lets say I click 3 articles - 3 tabs open in each tab I immediately click "show all steps on one page" that requires me to login on each tab. Any thoughts?

Topic by NastySpill   |  last reply


Accelerative problem...

Ok I'm in the planning stage of a secret project that is going ot be very risky if it isn't right, I need to accelerate ~100kg from ~20km/h to ~100km/h (I gave it all metric to help) over a reasonably short period of time, any improvement on 100km/h is welcome because I've done this without rockets in the past. Can anyone give me any idea where to get rockets that would be of suitable power, the largest estes rocket peaks at 25N of thrust and falls to 10N of thrust for only 2.5s after this, 10 of them would cause an acceleration of 1.41666. m/s2 which isn't much use to me. Unless I did my maths wrong, it's been a good while since i've done anything like this... Basically I'm looking for thrust and alot of it, preferably from something inexpensive but on this one I wouldn't mind paying a bit... Also I did look at the homemade candy rockets but I wasn't sure I'd be able to achieve the amount of thrust safely...

Topic by killerjackalope   |  last reply


mission of sputnik 1

Russian technology satellite. One launch, 1957.10.04. Tikhonravov's 1.4 metric ton ISZ satellite was to have been launched by the new R-7 ICBM as the Soviet Union's first satellite, during the International Geophysical Year.    But it was not ready in time, so Korolev hurriedly developed Sputnik 1 as a replacement. It became the first artificial satellite of the earth. Sputnik 1 had 1 watt of power, producing an 0.4 second duration signal on the 7 and 15 m bands. Four antennae were deployed at 35 degree angles. Power was provided by three silver-zinc batteries. Thermo-regulation was by a ventilator. The 580 mm sphere had a mass of 83 kg and was made of highly polished Aluminum AMG6T alloy 2 mm thick. It was built without drawings due to the quick time schedule. Korolev was everywhere, supervising all aspects of its construction. It functioned for 21 days.      AKA: PS-1. Gross mass: 84 kg (185 lb). First date: 1957-10-04. Number: 1 .     the word sputnik is russian word for traveller

Topic by Waren-Neutron   |  last reply


Photojojo hiring photo-lovin' bad-ass to run our online store

Photojojo (www.photojojo.com) is looking for a creative, web-savvy person to join our team of photography lovers in San Francisco. Your job will be to manage and help grow our online store -- a job that requires sleuthing skills to unearth unique and interesting products to sell (via the internet and occasional trade show visits), analytical abilities to project sales and manage inventory levels, and negotiating kung-fu to work with vendors to obtain the best possible pricing.You'll also have a hand in writing appealing product copy, planning and executing photo and video shoots, and planning and measuring promotions and advertising.Superhuman organizational skills and a self-starter attitude are a MUST.Preference given to those who are also excellent writers, understand social media, have excellent people skills, and an innate sense of marketing and promotions. It sure doesn't hurt if you happen to be a great photographer or have experience in online retail, forecasting, or a deep love of metrics and data driven decision-making! (Not knowing things is okay, but you must be a good learner.)If you've got an entrepreneurial bent and crave freedom and the opportunity to learn how to start a business from the inside, this is for you.more: http://photojojo.com/jobs/

Topic by superamit 


XYZ Recumbent Trike

So I've been wanting a recumbent bike to help me get in shape. I'm far enough out of shape that a standard bike is uncomfortable to the point of being a deterent. The biggest obstacle to me is the price. Even the Terra Trike which is supposed to be an affordable, entry level option is almost a grand even bare bones. I tried looking on craigslist but even used ones rarely dip below 800. So I looked for something I could diy. My biggest obstacle on that front is I don't own, or know how to use a welder. I think I've found something promising though.  There is a group in The Netherlands called N55. They are sort of a engineering/art collective and they focus on things to improve modern life. One of the projects they have out there is their XYZ Vehicles. They are pedal powered vehicles designed so that they can be put together with a minimum of tools. All that really should be needed is a power drill, some wrenches and a metal saw. From what I understand, they do classes where they build the 2 upright versions, the bakfiet and the tadpole design with the cargo box, but these are all over in europe and I am in Arizona so... I haven't been able to find anyone as of yet who has made one of the recumbents here in the states and posted about it. I would love to do this and post it as an instructable but I need some help. All of the materials list is metric and while I personally think a base-10 system makes a heck of a lot more sense that what we call standard measurements, I'm still not familiar with metric. So my question to the community is, should I convert all the measurements to standard or is there someplace i can buy these materials from here in the states in metric sizes? B I L L O F M A T E R I A L S : B O L T S & N U T S M6 SELFLOCKING NUTS, stainless (DIN985) - ca. 150 pieces (TWOSEATER: 200 pieces) M8 SELFLOCKING NUTS, stainless (DIN985) - ca. 5 pieces (TWOSEATER: identical) M8 NUTS NORMAL, stainless - ca. 5 pieces (TWOSEATER: identical) M6 and M8 BOLTS with Hexagon head, stainless, (DIN931): 6mm x 140 mm - ca. 2 pieces (TWOSEATER: 3 pieces) 6mm x 90 mm - ca. 15 pieces (TWOSEATER: 20 pieces) 6mm x 90 mm - ca. 5 pieces in DIN 933 (full thread) (TWOSEATER: identical) 6mm x 60 mm - ca. 60 pieces (TWOSEATER: 120 pieces) 6mm x 65 mm - ca. 10 pieces (TWOSEATER: identical) 6mm x 40 mm - ca. 25 pieces (TWOSEATER: identical) 8mm x 120mm, 2 pieces (TWOSEATER: identical) 8mm x 100mm, 2 pieces (TWOSEATER: identical) M6 WASHERS - ca. 300 pieces (TWOSEATER: 400 pieces) M8 WASHERS - ca. 10 pieces (TWOSEATER: identical) A L U M I N U M 2x25x25mm ALUMINIUM SQUARE TUBE: 15m (TWOSEATER: 34m) 3x30x30mm ALUMINIUM SQUARE TUBE: 1m (TWOSEATER: 2.5m) 4x60mm ALUMINIUM FLAT: 1m (TWOSEATER: identical) 2x22mm ALUMINUM ROUND TUBE Ø 22mm: 1m P L A S T I C S 3x880x340mm POLYCARBONATE SHEET (TWOSEATER: 2 times) ENDCAPS (PE), black, for 2x25x25 tubing: ca. 70 pieces (TWOSEATER: 100 pieces) ENDCAPS (PE), black, for 3x30x30 tubing: ca. 10 pieces (TWOSEATER: 15 pieces) POM or PE black, round Ø 25mm: ca. 0,3m (TWOSEATER: 0,5m) POM or PE black, square 21x21mm: ca. 0,6m (TWOSEATER: 0,5m) POM or PE WASHERS M8: ca. 20 pieces (TWOSEATER: identical) M I S C E L L A N E O U S AXIAL NEEDLE BEARINGS M8: 4 pieces (TWOSEATER: identical) NYLON SPHERE w. screwthread, black, diameter 50mm: 2 pieces (TWOSEATER: identical) NYLON RIBBON, black, width 25mm, for seat side support: 1,7m (TWOSEATER: 3,5m)

Topic by dark8587   |  last reply


Does anyone know what this weird bug I found is?

So yeah, I found this weird bug in my room, can anyone tell me what the heck it is? (a name would be extra nice) I think it's a larvae of some kind. Also, I know the pictrue quality is horrible, but it's the best I could do with a 2 MP phone camera. It's about as long as my thumb nail, which makes it about 10mm(~2/5 of an inch for you non-metric people), and it has a green/greyish, mandarine seed shaped spot on its both sides of the white part that didn't really come out in the picture, when I left it alone for long enough it stuck its tiny body out of the main white part, which you can kinda see in the photo. Its body is segmented like a centipede's. The main white part has two holes at either end, one of which the "head" (I think...) pokes out, and I dunno what the other one's for. It's quite flat, and has no legs on the white bit, it seems to drag the white bit along behind it. And another thing that didn't come out in the photo is the texture of the pod (I guess that's what you'd call it) is quite rough, I didn't touch it, but that's what it looked like. I also took a video, but I can't be bothered uploading it. Thanks in advance, Julian

Question by Pie Ninja   |  last reply


Has Instructables strayed too far from its origins?

Hi  So I posted a comment here today: https://www.instructables.com/id/Building-a-3D-Printer-Under-299/?ALLSTEPS see- mjreller (or see the attached pic) I have been a big fan of the site since 2008 and things have changed. I am aware that many 'bootstrap' projects are available and they probably make up the majority of the total. BUT, so many, like the one linked above have almost no information about how to actually build the item. Does this make it a bad 'ible?  In my mind, heck yes it does. As the parent of a very bright young person I am constantly looking for projects to keep his (our) mind(s) expanding and growing. I look to this site frequently for ideas and it is becoming less and less useful. Clearly by voting/not voting I have a voice in what content succeeds here.  But I feel like I am in the vast minority especially when reading the other comments for the above linked 'ible.  Being impressed with what someone makes does not qualify it as a good Instructable. I make large allowances for tech shortcomings (I know not everyone has access to laser cutters, etc etc) but the INSTRUCTION should still be there. Am I naive to expect to have a clear idea how to make every project on this site? I don't think this is too much to ask when other commenters are complaining about Standard-Metric conversions. I welcome an open discussion, and consider this an opportunity to learn how to better use the site. thanks for your time, Matt

Topic by mjreller   |  last reply


Uncharted Play is looking for talent

The creators of the SOCCKET, the first energy-harvesting soccer ball, are currently seeking creative thinkers with engineering backgrounds for our our 12-week Product Development Internship Program. All associates will be working on Uncharted Play's new product lines, as part of a multidisciplinary team of engineers and designers. The program is based in New York City. Scheduling is flexible, with a minimum of 20 hours per week required. As this is an unpaid internship, school credit may be offered as compensation, as well as consideration for joining our team after program's end.  Openings: Mechanical Engineer, Electrical Engineer, Operations Engineer Personal Characteristics: Go-Getter Attitude Fast Learner Creative Thinker Problem Solver Technical Aptitudes (Mechanical Engineer): Excellent visualization and 3D CAD skills Demonstrable Prototyping skills Knowledge of manufacturing processes Product development experience is desirable Knowledge of Design for Manufacturing knowledge is a plus Technical Aptitudes (Electrical Engineer): Ability to design, develop, test and troubleshoot analog and digital circuits Demonstrable prototyping skills Robotics experience is desirable Experience in the DIY community is a plus Technical Aptitudes (Operations Engineer): Knowledge of Supply Chain Management principles Willingness to interact with suppliers, both domestically and internationally Ability to construct models and metrics for operational efficiency Experience in the manufacturing industry is a plus If you are interested in becoming a Product Development Associate, please email your cover letter, resume and a brief example of your technical and/or creative skills to info@unchartedplay.com with "Product Development Candidate" in the subject line. You will be contacted within 7 business days on the status of your application.

Topic by vangelUP   |  last reply


8/10/25mm Construction Kit

I would like to propose a standard for the design of an "Erector Set" type construction kit based on a standard 10mm thick by 25mm wide rail with 8mm holes spaced 25mm apart.  The metric sizing would insure a global participation in the design process.  The main construction rails could be built from any smooth grained hardwood such as hard maple in North America or several other species I have seen used in Europe or ABS plastic, Aluminum, etc. Alternatively, a 5/15 - 3/8 - 1 inch format might find greater acceptance in the US which would allow for use of many standard components such as skate board wheels which use a 5/16 shaft for bearings, etc. Given a standard hole size, thickness, and spacing, a variety of 3D printed components could be designed by the community as add-ons to the basic kit.  Ideally such designs would be done in Autodesk Inventor based on PARAMETRIC MODELS that could be adjusted for say both a mm and inch standard. Laser cutting at TechShops, 3D printing, and other simple home shop built components for connectors, etc., as well as suggestions for utilizing other standard building components such as say plastic tubing for spacers, and other standard hardware components, would greatly expand the features of the construction kit. Ideally Makers, TechShop members, home woodworkers, etc. would produce kits and make them available to "young inventors and engineers" in our school systems as a community project. While I have suggested the above mentioned dimensions, these and other basic considerations should be vetted in a crowd sourced forum before any standards are set.

Topic by astroyny 


Affirmation without Featured Status

You work hard on a good, clear Instructable with really good photos. The Instructable shows how to do something most thought could not be done at home, but you found a simple way to do the job. Any who follow your Instructable will benefit from it and will save money. It is a better Instructable than others you have done that were featured by the editors. But, this one gets no notice from the editors and is not featured.  It is always nice when an Instructable of yours is featured, but it does not always happen. So, what really counts? I have noticed there is some intangible factor of cool in the minds of editors that may attract viewers to the site and gets an Instructable featured, but has little connection to any real practical value of an Instructable. Ultimately, the site is about drawing viewers and keeping advertising dollars flowing. It means a lot to me when people refer my Instructable to others. It is meaningful when people who can make use of the Instructable view it. When someone marks my Instructable as a favorite that is even better. I really like it when someone makes what I made based on my Instructable. I do not care if that person modified what I did. We do not have the same tools, nor do we have the same skills or needs or materials. What really makes my day is when someone comments or sends a private message to say my Instructable solved a problem. Also very good is when someone searches the Internet for a solution to a problem, and joins Instructables because he or she found my Instructable and it helped with what was needed.  Recently, Instructables published a printed collection of Instructables. Several of mine were chosen to appear in that book. Guess what! Most of those chosen were not featured, yet they were included in the book! That is a very positive affirmation about the real value of those Instructables. I have also had the experience that my Instructable was not featured initially, but months, even years, later an editor took a second look and featured it. In summary, getting featured is nice, but there are other metrics that really are much more meaningful.  

Topic by Phil B   |  last reply


DIY WiFi Helical Antenna impedance Problems

First off, I live in the states, but I absolutely hate the imperial system of measurements. I will try to use the metric system as much as possible.I have been attempting to follow hanzablast's Helical WiFi Antenna, but have run into a few snags. I have most of the parts and have a few problems concerning it.1. Instead of a Type N connector my USB card has a RP-SMA connector. Do I have to do anything special (buy a special panel mount/ reverse the connections along the wire) because it has reverse polarity or does it not matter?Edit: I feel foolish, Doing a quick wiki search on Reverse Polarity SMA I found out what it means. Turns out WiFi companies reverse the gender of the inner pin in their connectors. So either I have to find a RP-SMA panel mount jack, or buy a RP-SMA Male to N Male Adapter and a N Female Panel Mount. The latter of the two seems more efficient.2. I understand that having too small of wire can have a detrimental effect on efficiency, but what about using a much larger wire (instead of AWG 16 gauge wire using AWG 4 gauge wire)?Edit: Answered By NachoMahma3. I am having trouble locating a SMA right angle 4-hole solder point panel jack mount other than in bulk buys. Does anyone know where to purchase one separately? Edit: Answered By NachoMahma, but has become a null point.4. I am having a problem with the impedance matching. I have seen several different ways to connect the antenna (142.68ohm impedance) to the SMA Jack (50ohm impedance). I've seen half and quarter circumference turns, quarter wavelengths turns, and triangular strips of copper. Which is best?Edit: I did the math and read my friend's ARRL handbook. Supposedly, a 1/4 wavelength turn of a metal strip with an impedance of 84.463 ohm is what I need. Using TraceSim I figured that I can use part of the copper plate with a size of 12.79033mm in width, 30.775mm long (1/4 a 2.437GHz wavelength), and 0.406mm (.016") thickness placed 8.03mm (1/4 distance between coils) above the reflector plate will give me the exact impedance I need.

Topic by AllAgainstPaul   |  last reply


Fish Curry

Ingredients: Servings: 6-8 Units: US | Metric 2 lbs fish fillets (best with tilapia) 2 tablespoons garlic paste 2 inches gingerroot 5 teaspoons mustard seeds 4 bay leaves 1/2 tablespoon coriander powder 5 medium shallots or 2 medium onions 7 red chilies 1 tablespoon cumin seed 3 teaspoons turmeric powder 3 tablespoons salt 2 big tomatoes oil, to deep fry fish 3 cups water Directions: 1 In a grinder grind the onions, ginger, 2 bay leaves, red chili, mustard seeds, cumin seed all together. 2 Preserve some cut pieces 1 cup) of onion. 3 Cut small pieces of tomatoes. 4 Make small pieces of fish fillets, about 3 inches in length. 5 Clean them properly if you are using the whole fish and make it into small pieces. 6 Take a big plate, put the fish in it and sprinkle 2 teaspoon of salt, two teaspoon of turmeric powder and the garlic paste. 7 Mix all of them properly. 8 Allow to marinate for 1/2 hour. 9 Take a pan or a wok (preferable), heat it and put oil to deep fry the fish. 10 Once the oil is much hotter, fry the fish, 3-4 pieces at a time, 3-4 minutes on each side. 11 Keep all of them in a separate plate. 12 When all the pieces are fried, clean all the black residues from the oil in the wok with the spatula and put 2 tablespoon of fresh oil in the it. 13 Then put a pinch of cumin seed, a pinch of mustard seed, 2 red chili, 2 bay leaves, a pinch of aniseed (all together is called panch-phoran) and allow them to splutter. 14 Then put the cut onion pieces and allow it to just a little brown. 15 Then put all the ground paste,tomatoes,left over turmeric powder and salt to taste. 16 Keep stirring it until the paste becomes a little brown (it takes around 10 minutes). 17 You can also identify it by looking at the wok, that the paste will start leaving the oil and paste will now no more stick on the wok. 18 The paste is now perfectly fried. 19 Now pour 3 cups of water to it, or as much thick gravy you want. 20 Once the gravy comes to boil, start dropping the fried fish pieces and allow to boil for 15 minutes. 21 Switch off the gas. 22 Use coriander leaf for garnishing. 23 This dish should be served with fresh steamed rice and squeeze some lime some juice on top.

Topic by joyachowdhury   |  last reply


Easy automated method to find chronological age of an integrated circuit design? Answered

This is not a question related to a homework or career assignment. This question is an existential question. Specifically, the thing that I am wondering if it exists, or not, is an easy and automated method for finding the chronological date, e.g. a year, Anno Domini (AD) or Common Era (CE), when a named integrated circuit (IC) was introduced.  Preferably this method exists in the form of a free resource on the Web. As an example, the well known 555 timer IC was introduced in the year 1971, and I am reasonably confident that was the year, because the Wikipedia article titled "555 timer IC", https://en.wikipedia.org/wiki/555_timer_IC contains the words: "Introduced in 1971 by American company Signetics, the 555 is still in widespread use..." And I assume that statement is totally true, because if I can't trust the people who edit Wikipedia, I mean, who can I trust? ;-) Unfortunately, Wikipedia does not have a fact-filled article for almost every IC every sold.  In contrast, a place like www.alldatasheet.com has data sheets for almost every IC ever sold, but, it turns out, the data sheet does not always reveal the year the IC was introduced. To clarify this further, the thing I really want to exist, would be like a web site, with a name like: www.howoldismyic.com, or www.howoldisthisic.com, or www.icdob.com etc. (Please note that none of those URLs point to actual existing web sites, at the time of this writing.) Moreover, I am fantasizing this web site would contain a form, for to enter the name of the IC to look up, and then after hitting the "Submit" button, it would magically tell me what year that IC was introduced to the world, and maybe also which semiconductor company gave birth to it. As some example input and output, the query NE555 would return:  NE555, 1971, Signetics(r) As an additional twist to this fantasy, the query, LM555, would return the same thing, and this magical web page would like, know, that LM555 was a later version of the same IC, except produced by a different manufacturer, namely National(r); i.e LM555 was National's version of the 555 timer . If you have read this far, I congratulate you!  And I appreciate your eyeball time! If you are wondering about my motivation for this question, it is just that think the year an IC was introduced would be a very useful metric, like for answering more specific questions, like: The SG3524 and LTC3780 are ICs used for making switchmode power supplies.  Which of these ICs is more modern? I.e which IC was introduced latest? It turns out, the answer to this question is: The SG3524 is older (introduced first).  The LTC3780 is younger (introduced second). The SG3524 was introduced (I am guessing) in 1977, and that guess is based on some cryptic scribbles in a data sheet for the SG3524, published by Texas Instruments(r). The exact characters were: "SLVS077D – APRIL 1977 – REVISED FEBRUARY 2003" and I am just naively interpreting that blurb to mean the SG3524 was introduced in 1977. Regarding the LTC3780, I think it was introduced some time in the 1990s.  Looking at its datasheet, from Linear Technology(r), I could not find an obvious description of what year it was first introduced, but the first page mentions some US Patent numbers, and looking up those patent numbers, gives dates circa the early 1990s. So the LTC3780 is the younger than the SG3524. However to find that answer, I kind of had to do a bunch of reading of datasheets, and US Patent numbers, and that method took a little bit of work. My question:  Is there an easier way to find out how old (or young) an IC is?  More specifically is there an existing resource on the Web, like a free database, or a IC history site, or something where I can essentially "look up" the year an IC was introduced. By the way there is no absolutely zero urgency attached to this question.  So please answer if you feel like it,  and don't if you don't. I thank you for reading this.  My name is Jack A Lopez, and I approve of this message.

Question by Jack A Lopez   |  last reply


John Cleese's "Letter To America"

Forwarded along by an Aussie. Enjoy.Dear Citizens of America,In view of your failure to elect a competent President and thus to govern yourselves, we hereby give notice of the revocation of your independence, effective immediately. Her Sovereign Majesty, Queen Elizabeth II, will resume monarchical duties over all states, commonwealths and other territories (except Kansas, which she does not fancy), as from Monday next.Your new prime minister, Gordon Brown, will appoint a governor for America without the need for further elections. Congress and the Senate will be disbanded. A questionnaire may be circulated next year to determine whether any of you noticed.To aid in the transition to a British Crown Dependency, the following rules are introduced with immediate effect:1. You should look up "revocation" in the Oxford English Dictionary. Then look up "aluminium," and check the pronunciation guide. You will be amazed at just how wrongly you have been pronouncing it.2. The letter "U" will be reinstated in words such as "colour", "favour" and "neighbour." Likewise, you will learn to spell "doughnut" without skipping half the letters, and the suffix "-ize" will be replaced by the suffix "-ise."3. You will learn that the suffix "burgh" is pronounced "burra"; you may elect to spell Pittsburgh as "Pittsberg" if you find you simply can't cope with correct pronunciation.4. Generally, you will be expected to raise your vocabulary to acceptable levels (look up "vocabulary"). Using the same twenty-seven words interspersed with filler noises such as "like" and "you know" is an unacceptable and inefficient form of communication.5. There is no such thing as "US English." We will let Microsoft know on your behalf. The Microsoft spell-checker will be adjusted to take account of the reinstated letter "u" and the elimination of "-ize."6. You will relearn your original national anthem, "God Save The Queen," but only after fully carrying out Task #1 (see above).7. July 4th will no longer be celebrated as a holiday. November 2nd willbe a new national holiday, but to be celebrated only in England. It will be called "Come-Uppance Day." 8. You will learn to resolve personal issues without using guns, lawyers or therapists. The fact that you need so many lawyers and therapists shows that you're not adult enough to be independent. Guns should only be handled by adults. If you're not adult enough to sort things out without suing someone or speaking to a therapist then you're not grown up enough to handle a gun.9. Therefore, you will no longer be allowed to own or carry anything more dangerous than a vegetable peeler. A permit will be required if you wish to carry a vegetable peeler in public.10. All American cars are hereby banned. They are crap and this is for your own good. When we show you German cars, you will understand what we mean.11. All intersections will be replaced with roundabouts, and you will start driving on the left with immediate effect. At the same time, you will go metric immediately and without the benefit of conversion tables. Both roundabouts and metrification will help you understand the British sense of humour.12. The Former USA will adopt UK prices on petrol (which you have been calling "gasoline") - roughly $8/US per gallon. Get used to it.13. You will learn to make real chips. Those things you call french fries are not real chips, and those things you insist on calling potato chips are properly called "crisps." Real chips are thick cut, fried in animal fat, and dressed not with catsup but with malt vinegar.14. Waiters and waitresses will be trained to be more aggressive with customers.15. The cold tasteless stuff you insist on calling beer is not actually beer at all. Henceforth, only proper British Bitter will be referred to as "beer," and European brews of known and accepted provenance will be referred to as "Lager." American brands will be referred to as "Near-Frozen Gnat's Urine," so that all can be sold without risk of further confusion.16. Hollywood will be required occasionally to cast English actors as good guys. Hollywood will also be required to cast English actors as English characters. Watching Andie MacDowell attempt English dialogue in "Four Weddings and a Funeral" was an experience akin to having one's ear removed with a cheese grater.17. You will cease playing American "football." There is only one kind of proper football; you call it "soccer." Those of you brave enough, in time, will be allowed to play rugby (which has some similarities to American "football," but does not involve stopping for a rest every twenty seconds or wearing full kevlar body armour like a bunch of Jessies - English slang for "Big Girls Blouse").18. Further, you will stop playing baseball. It is not reasonable to host an event called the "World Series" for a game which is not played outside of America. Since only 2.1% of you are aware that there is a world beyond your borders, your error is understandable and forgiven.19. You must tell us who killed JFK. It's been driving us mad.20. An internal revenue agent (i.e. tax collector) from Her Majesty's Government will be with you shortly to ensure the acquisition of all monies due, backdated to 1776.Thank you for your co-operation.John CleeseLink

Topic by canida   |  last reply