Come learn some Iaido posted by me. (patsowers)
Topic by Pat Sowers
Hey all, I recently posted a new math instructable that explains the art of vedic multiplication. While powerful, I feel the technique could be made even more so if I could come up with a better to explain it. Could some of you give me pointers on how to get the idea of the technique across?Thanks,Purduecer
Topic by purduecer
Hey! I just posted an instructable on red foods, and I had a little trouble figuring out how to categorize it. I think that the cooking section could use a techniques category. If someone wanted to post an instructable about how to descale a fish or cut an onion, right now they'd have to decide if that was a main course, salad or sandwich. General cooking techniques are what I get the most requests for when I teach cooking. I think that more technique-based instructables would be a huge asset to the community! Cheers, Renee
Topic by kitchentablescraps | last reply
Hey im and architecture student and im wanting to experient with a moldable plastic (in model building) to design a sculptural screen wall. To replicate a "nurbs" surface that is digitally modeled, so its all wavey and stuff. If anyone has any suggestions on material or modeling techniques let me know! thanks
Topic by sbolli | last reply
The four techniques of a mouse
I have a rather abused Carpenter Chisel that I inherited. It has plenty of 'blade' left on it, just alot of dings. I've attempted to sharpen it with a metal file I have in the shop, and have had mixed results. I was hoping someone could share their technique.
Question by StickStoneBone | last reply
Its that time of year again! The beautiful days to go fishing are here! For all you fishermen, I just wanted to know your techniques, your baits, or your lures. This can be for any type of fishing. Surf fishing, deep-sea, fly, in the river, ice, anywhere! I am curious to see what others are doing for their fishing trips!
Topic by Brennn10 | last reply
Hey y'all! need some 2 cents on another instructable... so, i recently posted an instructable on how to make your own machete, and i have received some feedback on using tool steel, and quenching the metal before final sharpening to keep an edge longer. does anyone have any expertise on what type of steel/metal i should get, where i could get it, and how i could go about quenching the metal? any help would be much appreciated!
Topic by Trollinwater | last reply
I know the basic rules, and we'll play by hitting the ball off a tee (like in golf just much higher). It's for a sportsday of the whole college. Any class attends in two disciplines in a tournament against all ther classes and the teachers team. This year it's football and baseball. (last year was basketball and swimming, extremely funny). Now i'm pretty bad at the moment and i'm in my final year, so i don't want to be the jackass who screws up for the seniors :P I'm a pretty good runner on short distances and the field won't be huge (good advantage), but i'll need to hit the ball far enough to run, that is my major problem. (already read a tutorial from this side, but it wasn't that helpful), so i'm very glad for any tricks, ideas, instructions or whatever. thanks in advantage, oliver from switzerland (yes, the guys with the evil tax-stealing banks XD)
We're looking for both candy recipes and candy making techniques - we want to see gummies, truffles, caramels, hard candy and more. Think about things you buy in a candy store or at a fancy chocolatier and make them better! Visit the Candy Contest page for more info - and remember not to publish your instructable before the 8th!
Topic by jessyratfink
I have tried for a long to find a tutorial on how to do classic copper and brass soldering. I mean, is it anything like electronics soldering, at which i am fairly apt at? Do you use a a rod or a torch? ...How to mend a broken copperpipe? make the most classic pipejoints? How to mend a broken brass lamp that has lost a thingie? What kind of solder does one use for different materials? In all it's simplicity I am looking for an entrance level tutorial into the subject, explaining what basic tools one need and outlining how to do a few simple things.
Question by deepcore | last reply
Hey everyone! Here's a good one for anyone interested in new techniques! I have some porcelain steel I'm trying to cut and I was wondering if anyone has an idea, tool, or technique that i should try to cut the porcelain coated steel with that won't chip the edges of the ceramic. The porsaline steel is .017" thick the ceramic is .007" inches thick. If anyone could design something that I could use it would be greatly appreciated!
Topic by 2001warrior | last reply
Like diodes and servos and radio theory whatnot? Did you take classes? Read from books? I'd like to learn this sort of stuff, but can't find anyone to teach me. I also don't feel comfortable enough with this stuff to buy a bunch of parts and mess around with a book..
Question by kpwang2 | last reply
If you open up the newspaper to the comics section, and the strip is in black and white, you will most likely see a bunch of dots used to shade the strip. For some time I have been trying to find out information about these dots, and have so far learned that they might be called Benday dots, or as I recently learned from a FoxTrot book (Camp FoxTrot), self-adhesive shading film. If anyone knows anything about this, I would like to know (if possible) three things, what are they, how do you use them, and where can you buy them? Thanks Instructables community, because I know if someone has an answer, it would be you guys. Thanks! -Splazem
Question by splazem | last reply
Okay does anyone know how to do the double slap technique? Please let me know in written form (Because as i still have dial-up and can't get any better internet). also if anyone knows anyother cool techniques it would be cool if you shared those too.
Topic by wingman246
Hello, I created a video instructable to impart key phonetic techniques for poetry in 30 minutes! That should be all it take from knowing nothing about poetry to being able to write a Shakespearean Sonnet. Please try it out and let me know how you found it. Would love to know the time you actually took and also some examples of poetry you wrote! https://www.instructables.com/id/Poetry-Techniques-in-30-Minutes/
Topic by SpikedM | last reply
As chatroom mods, we try to keep the chatroom up to snuff. Sifting out the bad, making the room presentable to new members. So, speaking for all of the moderators in the Instructables Chatroom, how well/bad/mediocre are we doing our jobs? Is there anything we can improve on, would you like to join us, and be a mod? Make your voice heard!
Topic by bumpus | last reply
We've selected some fabulous prizes from Otto Frei and Rio Grande and we cannot wait to see all the amazing jewelry our community will create! Prizes include premium and simple jewelry making kits, mini drill presses with drill bit sets, and wire wrapping kits. The Jewelry Contest is open April 15th through June 10th. We're looking for creative jewelry instructables including metalworking, ceramics, wire wrapping, 3D printed jewelry, mixed media, beading, and more! Head over to the contest page to get all the details.
Topic by jessyratfink | last reply
Please offer suggestions on the best techniques you've tried, including preparation, paints, finishing process. Also, have you ever used dyes rather than paint?
I have been messing around with solar cells for the past few weeks and made a couple small panels and even one to put on my Losi Speed T (which is really cool, I got the idea from this Instructable - https://www.instructables.com/id/Building_a_Solar_Powered_RC_car/). Specific things to touch base on would be tabbing cells together, and what is the difference between tab and bus wire as well? What voltage specifically should I be shooting for to charge a 12v battery? Anything else that seems important to building a full sized panel is accepted.
Question by mweston | last reply
Could someone please tell me the basics of the technique to slow down your heartbeat? It's a technique I have heard of but not seen. Apparently it is used to fool an opponent into thinking that you are dead. Anyone know how to do it?
Question by Neovenetar | last reply
Question by bspratham | last reply
Question by dak45 | last reply
I've posted this link elsewhere on 'ibbles, I make no apology for that, just spreadin' the knowledge :-)Covers the basics of workshop practice courtesy of MIT robotics lab. It's quite dry, but I bet these guys really let go at the weekend.Robot delivery roomEnjoy!
Topic by bosherston
I am trying to redo my motorcycle gas tank. The pattern is called saran wrap painting. I need instructions on how to do it please
Question by kc_cole | last reply
Question by hillboy | last reply
Hello,I'm trying to build a coil gun and am stuck with this problem.....the gun I'm trying to build will be using a 5200mAh 22.2V 25C battery as source and a 16swg wire for coil in series with a N-channel power MOSFET (IRLR7843) as a switch. I'm using a 0.2ohm resistor to draw 110A current from the battery....but the problem is the resistor I'm is not capable of handling this huge amount of current it just blows up. I've looked for other alternatives but the problem there is with the size, which is not feasible in my case. so now I'm looking for a suggestion for some kind of resistor that comes in a small size which can handle this current and possibly has managed to stay out of my sigth.....or if I can go ahead with the DOL and eliminating the use of resistor entirely and connecting the coil directly to the battery( I know that might be foolish tho)
Question by RhuturajM
Craft in America explores the vitality, history and significance of the craft movement in the United States and its impact on our nation’s rich cultural heritage. Capturing the beauty, creativity and originality of craftsmanship, the film highlights artists and explores the inter-relationship of what they do, how they do it and why they have chosen a life of creating art. Watch the series. Visit the website. Great series. Moving stories. A reminder for why crafts are important.
Topic by AngryRedhead | last reply
Using 30-40 psi as specified. Using a small, detail gun with compressor. Finish is rough, flat, rather than glossy. Spray appears to dry in flight. I varied distance, paint-volume, pressure, and thinned the paint with water. Nothing is effective.
Question by JonBoy17 | last reply
Basically, low D and below don't come out easily and often don't come out at all. Does anyone have any suggestions on what I could be doing wrong?
Question by saxmaster765 | last reply
Forromagnetic meterials are not just called that for no reason.It comes from ferrous - iron.Iron has the highest permeability at normal temperatures.That means a magnet is attracted to it very strongly.We utilise this for transformer cores, the stuff inside a relay and the moving latch of the relay itself.Like current from an electrical system magnetic fields like to take the easiest route possible.Air is a very bad medium, so any iron close by will be prefered even if it is at a slight distance.You can check with a magnet, a steel bar and some iron shavings - please cover the are with plate first ;)Slightly less known is the option to also guide and extend the magnetic field this way.If you check how far the magnetic field of a magnet reaches and note that distance,then you can add some steel bars or rods at the poles - the field will extend through the metal.The most powerful example of this are the shielded magnets used for hooks or speakers.Except for a tiny area the entire magnetic flux goes through the metal.So in this lefover area the magnetic flux density will my many times greater than what the magnet alone would be able to.What most people don't know is that magnets also interact with other magnets in terms of their fields changing and distorting.The Halbach Array is a good example of this.Seen as a single magnet the array would have one weak and one strong side instead of even strenght for both.Wherever magnetic fields change a conductor can produce electricity or current.This in return causes an electromagnetic field that opposes the one from the magnets.Just drop a magnet through a copper or aluminium pipe ;)Since these distortions are widely unknow to the hobby tinkerer mistakes can happen ;)In the early days of exploring science some people already knew about shielding.And they also knew that certain metals have certain properties.Where it is quite hard to create a good coil from steel wire, copper works fine as it is not magnetic.What would then a copper shielding do?If you have two moving magnets with only a tiny gap then the resulting field distortions are quite huge.A copper shield around the magnet like a pipe would then react to these changes and also create a megnetic field that works in relation to the enclosed magnet.In simple terms it means the shield would let the magnet appear weaker or stronger depending on the field change.A quite old document I found gave some hints on how people thought in different directions back then.It was in regards to the design of a magnet motor by the way.Here various magnets were shielded in tube made of a copper-bismuth-alumium alloy.These tubes were then electrically connected so it created a single loop conductor.The claim was that the resulting electromagnetic field of this ring would drive the fields of the enclosed magnets sideways out of alignment.Like bending straight pastic tubes sideways.This "pulsating" would always happen when the magnetic binding forces reach max and so basically drastically weaken this binding effect.Another document talks about a "magnetised brass rod".A holes of the rod diameter is drilled through a block magnet.Not from north to south but through the middle where the flux is greatest.The claim here was that if that rod rotates fast enough a very low voltage with a very high current will be generated.Sounds easy and interesting enough that I might have to test one myself one day.The best one however is what I consider a hoax or being as good as Starlite.Someone back in 1908 claimed to have created a material the reflects magnetic fields.In lame man's terms it would be like an insulator around some electrical wire.The claim and some pics showed it, was that no magnetic field can pass the material.Or to be correct only a tiny fraction of what would be possible through air.A small magnet inside a longer tube of this material would create almost the same attraction to steel at the tubes ends as on the magnet itself.Measurements showed the field strength would be almost equal to a long mangnet of the same field strength.Imagine guiding the field of a big and powerful magnet through a tube around some corners or other magnets and then end in just a tiny hole for the entire flux...Too bad he never shared his secret formula to anyone knows to mankind.Isolation...Imagine you have an array of changing magnetic fields and quite strong magnets.Then you might face the problem that your focus on the "working" end neglected the other end of the magnet (stack).Providing some iron core material will keep thes field lines contained and away from interfering with your setup ;)But it also allows to use te otherwise unused end of your magnets more directly.For example by guiding to another magnet to affect its field strenght ;)Placing a sheet or steel between two magnets in a setup provides a "shared pole" so to say.If you have a north and south pole on a rotor at a distance of 5mm then a sheet of steel between will drastically weaken the strenght and reach of this combined field.It is like pulling the arch between the magnets down to make it more flat.And at and an angle the resulting field will also be slightly angled ;)Capping...When I first encounter this many years ago I couldn't really make sense of it.Quite complex..If you check the magnetic field lines with iron filings or similar then you notice how they go in a rounded manner from pole to pole.This is because the single field lines are of equal polarity and will dirve apart like opposing magnets.By capping the ends of a magnet you provide a short.Instead of diverting out like mad they will follow the cap and create very intersting magnetic field in return.If both poles are capped it is like pressing the magnet flat but without having a field on top of the oles - only aorund the center part.For this the thickness much must match what is required for the flux density.As a rule of thumb: if the end is still very magnetic then it is not enough material tickness ;)Interacting fields in a tube...This one is quite old too and seemed to have found no usable inventions apart from simple magnetic spring replacement systems.But it gave me some clues about Tesla "earthquake machine" ;)If you place a magnet in a tube and at it's ends magnets with opposing fields to the one inside then you can fix this magnet in place.Push one magnet deeper and the distance from the inner magnet to the other end will shrink the same amount.In this old paper two coils were around the pipe with the inner magnet between them.In this gap and at about the same width as the magnets length another coil was placed.Violent shaking would then create electrical energy at much higher level then modern shaker torches.In return an AC current on the outer coils would cause the inner magnet to move back and forth to create electricity in the center coil.According to the paper possible uses include: core less transformer, measuring minute changes in AC voltages, providing free power from a running motor...The last one had me stumbled for a very long time.Until I considered a different configuration.The whole thing is basically a linear DC motor - with correct timing of course.And in some motors we use permanent magnets.I am starting to wonder what would happen if we would design a rotor magnet like this?The running motor would be subject to constant field changes that affect the rotor.And a normal motor is always "even".By using four magnets instead of one we can push the field really flat.This means the area where the coil would operate (about 1/5 of the magnets area) will have a much stronger field.The resulting torque should be higher by about 25% !!Even a simple two coil model setup should show a significant increase in performance here.Timing is critical here but I tried some calculations based on 8 poles and the required "on times" for the coils.In a standard motor configuration with a single rotor magnet the coil is active for about 12° of the rotation.With a 4 magnet configuration this "on time" can be reduced to under 8° of the rotation to get the same amount of torque.An energy reduction of about 4% if you neglect losses and only think in time.If you think in terms like impulse energy then we are talking of about 15% !Shorter on time but still much higher flux density overall than for the long standard timings.Going the long run now:If you check how most DC motors work then you realise soon that for most one rule seems to followed.Only use one coild pair at a time.This is quite contradictive if you consider the geometry and options.A dual commutator would allow to use a second coil pair with a field OPPOSING the magnets instead of being attracted to it.After all: on you bike you pedal with both legs and not just one...And if you do it professionally then yu do the same as I suggested for the motor - you use the up pull of your legs as well.Doing it brushless only requires amodified h-bridge desing to drive the second coil pair at the right timing.Some will now say that it requires twice the energy, I say that for the same motor size your get twice the torque!Just imagine what that means in possible weight reduction for a motor - or its size to deliver the same torque at the same power levels when a normal motor is used ;)The more poles the more complicate the precise timing but no big deal really with modern electronics.Can it be improved even further?I though long and hard about that one until I considered EMF.A DC motor produces a lot of it when the elecromagnetic field collapses in the the coils.We do not utilise this energy...There is a tiny delay until the released energy levels are at max.My theory is that it should be possible to divert this energy into another coil set.If that coil is not the next active but still within a strong enough field area then the EMF would actually add to the drive of the motor.Only downside is that according to my calculations at least 16 poles would be required to get an optimum result.Way above of what I can create in my little garage :(In theory it should then be possible to reach about 98% efficiency for the motor....
Topic by Downunder35m | last reply
Do you cast upstream or downstream etc? Any other stuff i will kneed to know.
Question by tom-mot | last reply
Last week, Eric Wilhelm, the founder of Instructables, was featured in an NPR piece on the cooking style of "sous vide" and how many people are bringing the technique home with their own DIY versions. Check out the piece to learn more about these cooking techniques, and to hear Eric rave about salmon: http://www.npr.org/2011/10/23/141611844/self-starters-eat-up-slow-cooking-technique
Topic by kazmataz | last reply
It seems like it could be a big tangled mess if I put them in the washer/drier --- This is for a quilt that combines a few different fabrics of variable provenance/manufacture - and similarly variable shrink rates. Jelly roll in question is "Deer Valley" brand.
Question by haptotrope | last reply
I want to build a system that detect people in a place on fire .... if this possible what can I use and how can I protect the circuit elements from fire thank you..
Question by haithamM1 | last reply
Must be somewhat portable (ie. not carved out of stone, not using a ton of steel as a frame). Can have less detail or be more stylized than the images shown. UPDATE: I used sheets of polystyrene which I glued together and carved. Will post link to an Instructable soon!
Question by jess17a | last reply
I wanted to do some cool things with LEDs but i want to diffuse the LED's light in order to light up the biggest amount of area while using the least possible amount of LEDs and electricity.
Question by Mrpnut | last reply
How to make a simple practice dummy for your Kendo techniques
I am wanting to do a custom center console and door panels for my Honda Civic out of fiber glass and or carbon fiber, but I am not sure how to go about getting started with making the mold. If anyone could give some advice, tips or techniques I would greatly appreciate it.
Question by dseries16 | last reply