Mk7 extruder help

Instead of buying the extruder I plan on making it instead using various parts I have already however I do not have the thermal core. I am capable of milling and if not I know someone with a CNC what I don't have that I need are the "EXACT" dimensions of the thermal core can anyone give them to me?

Posted by pattyshaw 5 years ago


Out of Curiosity, has anyone ever worked with the Hadoop Programming language?

I was just curious, as I came across this reference not long ago: Apache Hadoop Core is a software platform that lets one easily write and run applications that process vast amounts of data.At this link

Posted by Goodhart 9 years ago


Ferrite Beads

I want to make one of those joule thiefs and I live in the USA. I don't know why I want to make it, I'd never need it/use it... BUT I MUST HAVE IT!!! I'm looking for tiny ferrite beads (toroidal shape) that are cheap (less than 10cents a piece). They CANNOT be leaded

Posted by guyfrom7up 10 years ago


In Spain, looking for clear teflon tube for a lightpipe.

I guess this question has two parts. I'm prototyping a solar energy device, part of which is a light pipe to transport the collected solar energy, about 300 - 2500 nM. I'm planning on making this from a flexible tube filled with a highly refractive liquid, stoppered at each end with clear plugs. It looks like the materials I should be using are: Tube: Teflon (PTFE, FEP, AF 1600, AF 2400) in that order of desireablitity, lowest to highest. The AF 2400 has a refractive index of 1.29, which is the lowest of any polymer. Apparently. Core: Mineral oil / liquid paraffin. Plugs: Acrylic or normal glass. Thoughts? Also, where would you suggest I try to find these? (I have the mineral oil already) Keeping in mind that I'm in Madrid, Spain. Getting this to work would make a huge difference to solar microgeneration, as transporting the energy is currently a bit of a nightmare. Thanks heaps, Daniel.

Posted by SolarFlower_org 8 years ago


Designers Wanted: Join a Think-and-Make-Tank for Soul of Africa

Oxford University's Said Business School is running a sort of Peace Corps for designers. Writes Lucy Kimbell, Clark Fellow in Design Leadership: We need up to 10 designers who want to use their design practices and skills to help social enterprise Soul of Africa tackle some of the challenge facing it, during a one-day workshop in Oxford in collaboration with MBA students. The workshop is a participative, creative "think-and-make-tank" that brings together people from management and from design to use visual methods to analyze and tackle specific problems identified by an organization. MBA students from Said Business School will be joined by designers from different disciplines to help social enterprise Soul of Africa engage with key challenges. Soul Of Africa is a charitable initiative and a self-sustainable project created to facilitate employment and funding aimed at helping orphans affected by AIDS through the sale of hand-stitched shoes. Unemployed and unskilled women in South Africa are trained to hand-stitch shoes, giving them the self-empowering ability to feed their families and provide them with essential health care. Download more details here. What we are looking for Designers (recent graduates, current MA or BA design students, and design professionals) are invited to take part. Ideally, we'd like a mixture of people from these backgrounds: - visual communication - product/industrial design - service design - interface design - fashion - design management How to get involved To apply, send an email to Lucy Kimbell at lucy.kimbell@sbs.ox.ac.uk to arrive on or by Friday 20 March 2009. The email must include - your name and contact details and any institutional affiliation - your design discipline (eg product, visual communication) - up to 150 words on why you want to participate. Successful participants will be contacted by Friday 3 April at the latest. Reasonable travel expenses to Oxford (standard class return, UK travel only) will be reimbursed to those who attend the workshop, on the production of a receipt.The Design Leadership blog is here.Via Core77

Posted by noahw 9 years ago


What is Google "broad core" algorithm update?

Can anyone have technically knowledge about Google "broad core" algorithm?

Posted by kbihmdigital 2 months ago


Which one is better dual core or intel

I am confused if there is any difference between intel and dual core

Posted by stephenward 3 years ago


I built a Super (ly fast) Computer, we named it HAL.

I am glad to announce, we have built a super computer. I'm serious, 8gb DDR2 ram, AMD Phenom 9600 Quad Core,500gb SATA hard drive, Dual ATI Radeon 4670 DDR3 512mb Graphics cards, Asus M3N78-VM AM2+ Motherboard. It's so fast, if i was chatting on yahoo, i can see what you are typing before you type it. If ANYONE takes this picture, i will know because the chances of someone with this same set up is pretty slim. Or at least give me credit and let me know.http://www.computersonics.com/Pictures, Well, now!

Posted by Yerboogieman 9 years ago


iPhone Chargers

I have seen many 'ibles on battery-powered USB chargers that say they cannot charge iPhones/iTouches because they require power to be supplied to the data pins. How, then, have I seen iPhone chargers (that work) with only two inner wires - a red and a black?  I recently bought an iPhone charger, so I could cut the wallwart off and use it instead of a USB port in this circuit. However, I have discovered that it only has 2 inner wires, as previously detailed. How could I use a 9V (PP3) battery and a 5V (7805) voltage regulator to turn this into a battery-powered charger? Both of the above questions are ones I would like answers to. Thanks in advance, ~H4ZZ

Posted by __DELETED__ 7 years ago


Electro Magnetic Core Solenoid

Dear Friends, I need to lift a weight of 100 grams or 500 grams weight using a solenoid. I can use any current DC or AC. What is the procedure for calculating this. Please help me. Ramanathan PS INDIA

Posted by RamanathanP 3 years ago


Computer Help

I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad core processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Posted by Caveman477 10 years ago


Processors

I am thinking about upgrading my amd processor from a dual-core 2.0GHz to a quad-core 2.3 GHz processor and i was wondering if the AM2 socket that i already have will work with a AM2+ that the processor has.P.S. also, if there are any better deals that you know please comment

Posted by Caveman477 10 years ago


How to Reuse Toroids

I am trying to re use some toroids that I salvaged from a broken computer PSU and motherboard. I have some electronics experience however this is mainly with digital circuits. I am reusing the toroids by removing the original windings and hand winding the several coils required by the circuit. I have noticed that while the one largest (2.2cm diameter) core works exceptionally well, all other cores salvaged from the devices work poorly. My goal is driving a nixie tube. While the "successful" core yields about 180 volts AC the rest can barely top 60v output (all have similar numbers of windings, roughly 150 turns on the primary, 5tap5 on the secondary, 10 on the feedback). Clearly there is some level of variation between how the toroids perform. Is there any easy way to work out which cores will work? Can anybody explain which factor(s) are likely to be the cause? Visually the cores appear to be the same, looking like they are all made of soft iron. For reference, I am using the toroids to make a Royer oscillator - which does appear to be working, as my source voltage is 5V. Any help appreciated, Thanks, Drew.

Posted by andy 7 years ago


Magnetic Field for hollow core?

I am working on a project in which I have to control a small setup at the end of a motor shaft using an electromagnet. The electromagnet needs to be around the shaft inbetween the setup and the motor. So I have used a metallic ferromagnetic spool(image attached) and wound 32 gauge wire on it to make it an electromagnet and put the shaft through it. Since this core made out of spool is hollow, I'm not sure how the magnetic field will behave. I tried powering up the one I made and it' seems to be both attracting and repelling a magnet's pole (edges attract while centre somewhat repels). Anyone got any idea about this?

Posted by Antzy Carmasaic 6 years ago


Toilet Paper Cores -- Rolling Out Of The Recycling Bin & Into A Very Creative Rainy Day Craft Project!

Finally, dead trees everywhere will revel in a life well-lived (above and beyond being flushed down the drain). This is a very original way to use the inside of toilet paper rolls and will probably appeal to parents, greenies, artsy people and crafters alike. Fun stuff!

Posted by sfinfgeld 9 years ago


Working With Shim Stock

How does one cut shim stock into 54 perfectly identical pieces? I'm trying to make a deck of cards with .002" stainless steel as the core.

Posted by dudemonkeys 10 years ago


Linear Magnetic Field

I am stuck in my research,please tell me a way to make a linear electromagnetic field,other than making an outer core for it please help me

Posted by ajose4 4 years ago


home made MOT pork chop!

I have a crazy idea to make a transformer for a tesla coil useing two MOTs that are exactly the same, Then cutting them so you only have the 2 "E" core sections, Pull off the primary off one, flip the secondry so its out of phase, put the two cores together and clamp them so they cant move. put some extra shunts in to help limit current, hook up the primary to a variac and turn up the power slowly and test the arc. PORK CHOP! pole pig?

Posted by inductionheat! 9 years ago


Cosmic rays amplify sun's effect of warming and cooling.

Interesting article I read today. B.C Mud coresDoesn't fit with the current orthodoxy of climate science in the media, but it's very interesting.

Posted by royalestel 11 years ago


Got an old 775 intel processor

Hello everyone !  So let me explain myself, I got an old socket 775 intel pentium dual core e5200 processor and I wonder if I could turn it into a usb heater like this : https://www.youtube.com/watch?v=uSgW9AMeIjo The only problem is that I can't find out where to solder the USB wires using the datasheet : http://www.intel.com.au/content/dam/www/public/us/en/documents/datasheets/pentium-dual-core-e6000-e5000-datasheet.pdf So my question is can someone find out where I could solder the wires ?

Posted by jyroman 4 years ago


refferers

I was looking at the analytics of my instructable and i saw two seperate things called "local host" and when i click them it takes me to "http://localhost:14809/selenium-server/core/Blank.html" with a error message  just wondering what that is thanks!

Posted by bravoechonovember1 3 years ago


Core Skills

I've been thinking about writing on the subject of core skills and or resources that branch out to other skills and allow a person to get the most out of living, building, making etc. I think that the Instructables members have these skills in spades but there are plenty of people that look at what all of you do and think "That's cool but I could never do that". Which is the opposite of what this site is about. Now I'm saying skills but I think there are also other factors that apply. Obviously having enough time to work on projects is important but really that's a skill too, time management. Tools might be another factor, things like a Dremel tool, Sugru, etc. really open up what a person can do. I'd like to consider things like that also in this endeavor. These are the core skills I've identified, some of them seem really simple but I think they need mentioning. I'm also pretty sure a few of these are already covered by ibles. Measuring Length Checking for Level and Plumb Using a Claw Hammer Using a Sledge Hammer Identifying Screwdriver Bits Powertools - Saws (what they are best used for, describing Circular, Table, Jig, Band, Scroll, etc) Powertools - Drills (best practices, maybe identifying drill bits etc.) Powertools - Grinders (Hand, Bench, Die, etc) Reading a Multimeter (and what to do with those readings) Reading a Schematic Welding Gluing (and what kind of glue is good for different purposes) Then I got a little esoteric and thought about what it takes to accomplish projects. When to do research and when to just start doing. (Because I used to spend way to much time worrying about accumulating data on a project) How to balance projects with living your life. (Because I still have problems with that. But I do have some tips. Falls into time management.) How to find that part you're missing (I haven't really thought about this one much, but it would be great to have a thought process in place. There are likely a lot more. I admit this would be a large project to compile and may span several ibles. Do you have any input on how to accomplish this? What skills have you found to be at the core of your efforts to make things? Instructables has some real brainpower here I think if there is a group that could distill this down to something manageable it would be us.

Posted by EmmettO 7 years ago


Spud gun materials

I'm building a spud gun and all I could get was cellular core ABS, it seems pretty light and I'm not sure if I can trust it.  Would PVC be a better choice to handle the pressure?

Posted by loki610 8 years ago


"Growing Earth" theory ...

Hi.I was wasting some time on Google Video, and I found this one.This man believe Earth (and others planets) are expanding ...According to Wikipedia, this theory is not new, and is serious. After all, if the Sun (and stars) grows, why not the "core" of planets too ?

Posted by chooseausername 10 years ago


New Take on the Tandem

Jiang Qian has come up with a very interesting idea: bicycles (or are they tricycles?) that you can either ride alone or link up and ride with others. To top it off: the bikes are electric and fold up.Link via core 77

Posted by joshf 10 years ago


Cheap smartphone

Hi , i found a really cheap android smartphone here ... but im not sure is scam or not. http://www.funbookes.com/mysaga-c3-android-4-2-dual-core-smartphone-4-0-inch-wvga-capacitive-screen-wifi-gps-bluetooth-black-white.html Anybody here know about this brand or this phone?

Posted by docrivers 4 years ago


POWERING ATOMIC REACTOR CLOCKS:LASER SOLAR PANELS:USE LASER LIGHT NOT SUN

USING LASER SOLAR PANELS(NOT SUN LIGHT LASER LIGHT) INSIDE ATOMIC REACTOR COULD MAKE REACTOR FIRE SAFETY WITH USING FIBER OPTICS THAT HOLD LIGHT ENERGY TO TRANSFER ENERGY IN AND OUT OF ANY ATOMIC CLOCK: FIBER OPTICS CAN MOVE LIGHT THROUGH ANY BEND OR SMALL TO REACH PLACES AND THEN TRANSFER ITS LIGHT TO ENERGY WITH THE FOLLOWING IDEA. BY SHINING LASERS ON SOLAR PANELS THAT ARE INSIDE ATOMIC AREA DEVICES TO GIVE THE PANELS ELECTRICITY FOR REACTOR CLOCK AND REPLACING ALL DANGEROUS WIRES THAT SEND ELECTRICITY TO ATOMIC PARTS OF NUCLEAR PLANT. WITH NEW FIBEROPTIC WIRES TO SEND PHOTOVOLTAIC WIRES THAT SEND ELECTRICITY WITH LASER LIGHT. VERY SAFE COMPARED TO WIRES THAT WHEN CUT MAKE SPARKS OR FIRE. FIBEROPTIC WIRES ARE SAFE IF CUT ONLY NON DANGEROUS LIGHT WILL BE LOST. AND COULD REDUCE RADIATION FROM CROSSTALK THAT COME FROM REGULAR COPPER WIRES. One more idea can you charge a solar panel battery recharger by shinning laser beam on the solar panel cells in places were there is no sun light using laser light which can charge a device from a range of up to a football field if needed. This might be used in caves or evenin drilling for in off shore oil rigs were there really is no light in deeper water. And all other light sources of light would be distortedby reflection from the water. Only a laser beam could recharge aelectronic device by using photovoltaic in deep water where sundon't shine and only a laser will not have all of its light reflectedbecause of the water's reflection property, you would only be able touse laser light properties has less water reflection than normal light. BY HUME SCIENCE INTERNSHIP FIBER OPTICS TO SEND LIGHT INSIDE ANY TYPE OF ATOMIC AREA AND CONVERT IT ONCE INSIDE CORE INTO ELECTRIC POWER AND SAFELY DECREASING RADIATION PROBLEMS. THIS IS GOOD BECAUSE LESS COPPER WIRES ARE NEEDED.(ONLY LIGHT WOULD BE TRANSFERED IN CASE OF WIRE IS CUT ONLY LIGHT WILL ESCAPE MUCH LESS DANGER. USING FIBER OPTICS TO SEND LIGHT ENERGY ONTO SOLAR CELLS INSIDE REACTOR/THIS IS A GOOD SAFETY TOOL BECAUSE IF FIBER OPTICS ARE CUT ONLY LIGHT WILL BE EXPOSED AND NOT DANGEROUS ELECTRICITY WHICH WILL CAUSE RADIATION PROBLEMS. TO SEND ELECTRICITY INSIDE THROUGH OUT REACTOR//: INSIDE ATOMIC RADIATION AREAS. THERE ARE NO NEED FOR ELECTRIC WIRES. IF ELECTRICITY IS MADE INSIDE REACTOR CORE, BY SHINING INFARED ON SOLAR CELLS OBJECT NOT SUN LIGHT ONLY INFARED LIGHT ON THEM PANELS. THIS LIGHT HAS TO BE LASER OR INFARED BECAUSE IT CAN BE CONTROLLED USING INFARED LIGHT THIS ALLOWS IT TO BE MORE CENTERED THAN SUN LIGHT CAN. REDUCING ATOMIC RADIATION IN ATOMIC REACTOR CLOCKS. AND NOT USING WIRES. A ATOMIC REACTORS CORE CLOCK HAS TO GET ELECTRICITY. THIS CAN BE DONE WITH SOLAR PANEL CELLS PLACED AND CONNECTED TO THE CORE'S CLOCK. THEN BY SHINING LASER LIGHT OR INFARED LIGHT ON SOLAR PANELS THAT ARE INSIDE THE CORE CAN GIVE AND GET THE LIGHT ENERGY POWER IT NEEDS TO RUN TRANSISTERS AND COMPUTER CHIPS. FROM SOLAR PANELS THAT ARE CONNECTED TO THE CLOCK INSIDE THE CORE. AND ARE BEING GENERATED BY CONTROLLED LASERS THAT ARE ALLOWED TO BE AT VARIABLE DISTANCES. CAN ELECTRICAL ENERGY BE TRANSPORTED BY A LASER. SURE JUST SHINE IT ON THE SOLAR PANEL AT NIGHT AND YOU WILL GET A LITTLE ENERGY, SURE IT WORKS. CAN A ATOMIC REACTOR GET ITS ENERGY VIA LASER LIGHT INSTEAD OF WIRES DOING THE TRICK. NOW WITH LASER OR FIBER OPTICS. WIRELESS ELECTRICITY CAN BE SENT WITHOUT WIRES.ELECTRICAL WIRES COULD BE THE PRODUCER OF STATIC RADIATION. WIRES DO SEND ENERGY INSIDE THE CORE AND GIVES ENERGY FOR THE CORE'S REACTOR. CAN THIS IS ALL DONE WITH NO WIRES INSIDE THE CORE; IF WE ALLOW ENERGY TO BE SENT VIA LASER LIGHT TO A CONVERTER OF SOLAR PANELS COULD CREATE ELECTRICITY IF THOSE SOLAR PANELS WERE DIRECTLY SHINED ON TO BY LASERS. A GREAT DEAL OF WIRES COULD NOT BE NEEDED. SENDING POWER TO CORES WATCH OR CIRCUITS IS POSSIBLE. BY SHINING A CONTROLLED LASER ON THE INSIDE OF A CORE'S SOLAR PANEL CAN BE ACHIEVED BY FEEDING THE SOLAR CELLS INSIDE THE REACTOR WITH LASER PHOTO ENERGY LASERS WOULD SIMPLY SHINE ON INTERIOR REACTOR SOLAR CELL COMPONENTS. ONLY DIFFERENCE IS INSTEAD OF SUN LIGHT CREATING THE ENERGY IT WILL BE A HIGH POWERED LASER SHINING ON THE PANEL SOLAR CELLS. USE LASER LIGHT WHICH IS MORE DIRECT AND IS MORE FOCUSED OVER A LONG DISTANCE. LESS RADIATION AND LESS WIRE WASTE IS THE FINAL RESULT. HAVE A GOOD CLEAN DAY. THIS IS A NEW FORM OF TRANSFERING ELECTRICITY TO EXTERNAL LOCATION. USING FIBER OPTIC LIGHT AND SENDING IT AND THEN RECIEVING IT ACROSS A DISTANCE WITHOUT WIRES. THIS SEEMS SAFER TO ME BY USING THIS METHOD. REMEMBER THIS; WE ARE NOT USING SUN LIGHT IN ANY OF THESE METHODS ONLY LASERS OR FIBER OPTICS. THIS IS INFORMATION FROM A SCHOOL PROJECT OF MINE AND IF YOU CAN GIVE MORE ON THIS SUBJECT PLEASE DO. PLACING SOLAR PANELS INSIDE BUILDINGS NOT JUST OUTSIDE, AND CAPTURING OFFICE LIGHT 24 HRS MORE PROJECTS THAT I WOULD LIKE TO EXPERIMENT A INTERNSHIP WITH! PLACING SOLAR PANELS INSIDE BUILDINGS NOT JUST OUTSIDE, AND CAPTURING OFFICE LIGHT 24 HRS

Posted by humexavier 10 years ago


Alphabet Soup You Can Wear

The magic of laser cutting has been shown once again, this time with these alphabetical or numerical scarves. While they look like they are made out of paper, they are actually micro fiber suede. This could be the start of a new fashion trend...Link via core 77

Posted by joshf 10 years ago


help!

Ok. So I got this sweet new flashed based 4g creative zen mp3/mp4 player. I can't use it! I have 2 computers, an old windows 98 and a newer one running fedora core five. Please help! It doesn't even work with gnomad. And on the 98 it says it doesnt support that windows! Please help!

Posted by LinuxH4x0r 10 years ago


Electromagnetic induction questions.

OK, this is another one of those questions I should know, but don't.  Mainly because I have never done it before, I have a whim to build an electromagnetic launcher, something table-mounted with a range of around 3-5m (10-15 feet).  I'm not after launching nails through Coke cans. I have been browsing the web, and the designs all seem to be much more complicated than is really necessary for toy. The image below is a scan of my badly-drawn thoughts of how simple it should be. Have I got that right? I plan to use a bunch of capacitors harvested from dead electronics and connected in parallel.  Is there a recommended total capacitance for such a device? If launching a ring, must the ring slide over the ferrous core, or would there be enough umph to launch a ring balanced just past the end of the core?

Posted by Kiteman 7 years ago


I got a new computer!

It's been a long time since I've had either the newest or the "most powerful" computer in the household, so I feel like bragging a bit. Mac-Pro 8-core 2.8Ghz, 10G memory. It'll have about 2TB of disk (320+750+500+500) once I've moved things around...

Posted by westfw 10 years ago


Ultimate Pi Home Server

I'm new to linux and following through the instructables  for Pi home server. Everything is fine until I try to login to Webmin via ssh from windows 7 PC with `putty` using IP:12321 This lets me login to root @core but can't get the Webmin login screen. Any help much appreciated

Posted by Crocker7 3 years ago


Door upcycle need help hiding hinge area

I am trying to make a desk out of a hollow core door. I want to fill in the hinge areas before painting or put something there after painting to make them look nice. any ideas? I haven't found any online and I've spent hours looking.

Posted by BrookeF 1 year ago


Joule Thief Troubles

I have built several Joule Thieves as seen in this video. None of them worked. Is the schematic wrong? I am sure that I used all the right components, and I wound the transformers right... What could be the problem? Could it be the ferrite core? I used one from an old computer power supply. Any help would be appreciated.

Posted by 1up 10 years ago


Homemade Ferrite - what updates do you seek most?

First a massive thank you for the interest in my project - I certainly was expecting this great response! Some might already know my first tutorial on how to make your own ferrite, here: https://www.instructables.com/id/Make-your-own-Ferrite-to-improve-magnetic-fields/ As the muber of followers grow and so the hits on the linked video I was wondering what updates you would most interested in! I want to make some custom pot cores for small HF transformers in the 2-20kHz region. So the question is what new recipe you would like to see... There are several options, all would include some mould making first: Clay as a binder Ceramic as a binder Using some non-hygroscopic salts to melt into the ferrit powder as a binder - all three would require to finnish the parts in a good oven 2K glue or fibreglass resin as a simple dry mix 2K glue or fibreglass resin with vacuum curing to remove all air - this might require special glue as in my experiments resin and glue start boiling long before total vacuum is reached, was thinking of casting resin istead as this would be rated for vacuum preparation From past experiments these are the most likely candidates to result in a good product, if you have other ideas and suggestions post them here. Being a guy that loves to keep things simple and prefering the use of scrap / easy to obtain parts I would obviously love to know where you struggled with your creation of ferrite. I still did not find a good source for rare earth materials in fine powder form to add to the mix but don't think it is an issue as for high performance there are always commercial cores available. Some people asked my what the best was is to make a big toroid core for Rodin coils and other unuasally big cores for transformers. If you are one of them, leave your feedback here as well as the size is only an issue in terms of avoiding cracks during the curing. Let's get the party started! :)

Posted by Downunder35m 3 years ago


Battery Powered Water Heater

I need some help. Well, I'll be honest, I need a lot of help.  I am trying to heat 1 liter of water running through a small tube that holds 8ml of fluid up by 12C, with a maximum temperature of the heater reaching 60C, and the entire liter needs to be heated within 30 minutes.  In my experiments, the tube holds 8ml of fluid while passing along the 'heater' core, and will pass by the core in a total of 10 seconds. So 8ml heated by 12C in 10 seconds is the limiting factor and multiply that out to cover 30 minutes.  The good news, I have managed to accomplish this feat by wrapping the tube around a curling iron rated at 80W x 110V. End result is 12C rise in output fluid, so I know the theory is completely possible.  However, here's the kicker, the entire system needs to run off of battery power.  So the 2 big questions are: what material should I use as the 'heater core' since I can not use a standard curling iron, and what battery system/configuration should I use (needs to be universal purchase ie, AA, AAA, D, C, 123, 9V, etc) Any help would be greatly appreciated both to my personal safety as I tinker in the garage, and to my wife's sanity as she watches me play with water around plugged in curling irons. :) Thanks in advance. WS. 

Posted by whiskeysausage 5 years ago


Discharging high amounts of amperage in a very short time.

Previously I asked this question, except I wanted to build an electromagnetic dent puller. But no one gave me specific ideas or instruction of how it could be done, instead everyone told me different ways to pull the dent out, or how the metal looks.. Anyway. I have a lot of copper wire. And I have a bunch of magnets and ferrous cores, iron rods.. etc. I am wondering if I can create a very powerful burst of magnetic energy with a few winding's of copper around a ferrous core. I'm talking enough to push two very heavy objects apart, such as a television or couch... 1) Copper will be wound around about 40-60 times 2) High amperage discharge from capacitor bank 3) Possible explosion or melting wire? Thank you... again

Posted by Justdoofus 6 years ago


Rc cessna

     Hello everybody i am building a 34 inch wingspan cessna 107b n2789d plane and i am looking for some advise urls of free plans and i am looking to make it out of blue core dow fome so any advise on servos, batteries, motors, esc, props pleas let me know. Thanks, Cobalt420

Posted by cobalt420 6 years ago


November 2014 Build Night with Spark.io

#BUILDNIGHT NOVEMBER BUILD NIGHT We are partnering with Spark.io, who make a development kit for amazing connected products, for our November 2014 build night. Check out some of the amazing projects created with the Spark Core here. Sign up to participate in the build night and we will ship you a package that includes: (10) Spark Cores (10) Spark Buttons: a new shield for Spark with LEDs, 4-way clicking like a game controller, acceleration and temperature sensing. See photo of the new board below! (2) Maker Kits 30 SPACES AVAILABLE Deadline to sign up: Wednesday, October 8. Accepted spaces will be notified by Thursday, October 9. Read our FAQ to learn more about the Build Night program rules and how to make the most out of this event for your space. HOW TO PARTICIPATE Host a Build Night: pick a time in November to host a project build night using the Spark Cores and Spark Buttons. You can host multiple build nights during November to work on your projects. Post 2 Instructables: post 2 Instructables using the Spark Cores and Spark Buttons. Not posting these Instructables will affect your chances to participate in future build nights. Brownie Points (not required): after the build night post a forum topic on Instructables about your event. Include pictures, stories, etc... Here are two examples from past build nights: Noisebridge and Makers Local 256. We may even feature your photos on the homepage. REWARDS: If your submitted Instructable for this event gets featured by one of our editors we will send you an Instructables Prize Pack which includes: Instructables t-shirt, stickers, and patches!! This forum post has guideline for posting a feature worthy project. Be sure to let people at your event know so they can win a prize pack! Limit 3 per space - first projects submitted with have priority. RESOURCES Spark Tinker App Instructables App (for documentation during the build night): iOS and Android JOIN US ON SOCIAL Twitter: @Instructables, @spark_io Instagram: @Instructables Tag your posts: #BUILDNIGHT #INSTRUCTABLES SIGN UP: Fill out this form

Posted by Carleyy 4 years ago


Universal motor projects

Hello, everybody. I took apart a universal motor recently. The motor itself is broken and does not work. However, I would like to know whether I could rewind the copper coils around the silicon steel motor core in order to make a toroidal transformer.  I have heard that motor cores are sometimes grain oriented, which would significantly reduce my transformer performance. This motor is, however, about a decade old. I want to use the existing motor coil as a primary, and then wind thick power transmission line wire as a secondary in order to get a high amperage output. Is this possible? I would also like to know whether there are more interesting projects out there which I could attempt. I have heard of people making generators from motors, for example. However, winding a transformer is my primary goal. I have attached pictures of the motor. Please tell me whether the above mentioned transformer is feasible. Sorry for the picture quality. Thanks in advance.

Posted by TheLightningConductor 1 year ago


Does This Desktop Spec Compliment the Price? = - )

This is a Desktop computer package from a company called "Cube247" . I am really considering this deal. ( Intel Core 2 Duo processor, 2GB of fast memory, massive 500GB hard disk, DVD rewriter, huge 19” widescreen TFT panel and Microsoft Vista – all for £449!!Microsoft Windows Vista HomeIntel Core 2 Duo E4500 Processor2048MB DDR II 667 Memory500GB SATA II Seagate Data Storage < ----------------------------Awsome!!!!!! Half a Terrabyte.NEC 7200 Multi Format DVD/CD ReWriterIntel 950 128MB GMA Graphics7.1 High Definition Surround SoundIntel Core 2 Duo Motherboard19” Widescreen TFT 5MS Flat Panel ScreenLogitech Wireless Multimedia KeyboardLogitech Wireless Optical MouseLogitech S220 2.1 Speaker System10/100 Ethernet LAN8x USB2 Ports All for £449.00 .Does it sound like a good deal ???Also I have a few queries......:The computer doesn't have dedicated graphics, it has intergrated. Will I be able to upgrade the desktop to be fitted in with a graphics card later on.Also the the graphics are: Intel 950 128MB GMA Graphics. What kind of games will I be able to play on the desktop with this graphic spec....if any at all..... = S.The OS this package comes with is " Vista Home Basic " , It only takes £20 more to upgrade the OS to " Vista Home Premium " do you think I should go for it . Does Premium Make a good difference?Thank you Please help.

Posted by Baron A 10 years ago


help with black powder rocket

Hi i am making a black powder rocket similar to a bottle rocket just bigger scale and am having trouble with it ill give as much info as i hope someone can help me out thanx the rocket engine is 53 mm in length 1.5 mm thick wall 16 mm inside wall to wall hopefully that all sounds ok the (nozzle) in the end is 6mm thick was planing on filing it with black powder and packing it in around a core with 42 mm of powder and a further 5mm plug on the end then turn it over and put in a fuse etc... strap to a small stick or skewer and launch what i am wanting to know how big should the nozzle hole be to actually get lift off and should i just insert a fuse or a fuse and quick match or fill the core with loose black powder and make a paste of black powder and plug the end and insert a fuse onto that im probably going the complete wrong way about this if i am feel free to tell me what im doing wrong or what i need to do thanks

Posted by acid_clown 11 years ago


Dual HDMI Processing

I have an idea for a project that needs to process 2 hdmi inputs in real time, and 1 hdmi output. What kind of processing power would I need for this? I don't think an arduino would be able to handle it, but would a raspberry pi? Or should I be looking at like a mobile dual-core or something? I'm trying to keep it in a small form factor and have it the least amount of lag possible. Thanks, -Nikon

Posted by evillordnikon 3 years ago


Chair of recycled acrylic

Chair of recycled acrylic With concern for the environment, having as one of its core values actions aiming at sustainability. It is for this noble motive that some companies in Brazil, arrive annually to collect about 480 tons of plastic waste per year for recycling. The acrylic sheet recycled exhibit properties similar to the original acrylic plates and cost much less. In this project, I show the creation of a chair design with fully functional and above all sustainable.

Posted by Daniel Domingos 5 years ago


Let the Battle Commence! (Help me find some components)

Hello Instractables community! I am currently building my computer on paper and wanted to know, What components to buy, Here is the list of what I'm not sure of Processor (Dual core) Video card Motherboard And if possible show your system specs, Thanks, and you may see an Instructable in the near Future! AMD Vs Intel

Posted by Steamdnt 10 years ago


Electromagnetic and Magnetic Levitation

Hi! I am setting up a levitation system and need to estimate the amount of voltage and current that is needed for a 2" dia. coil to produce 4800 Gauss. I don't have any restrictions/requirements on the core, number of turns, etc as long as it would produce 4800 Gauss with a 2" diameter. How can this be calculated? (I have spent a lot of time googling for such information, but I am pretty confused and didn't find how to calculate this) Thanks!

Posted by J50Nunlimited 9 years ago


Electromagnet Trouble

I'm in the development stages for my entry into the Launch It contest. Right now I'm just experimenting (or trying to) with scale electromagnets. I'm using solid core insulated copper wire from RadioShack, and a nearly fresh 9v battery. I tightly wound the wire around a finishing nail, which happened to already be magnetic, but am not getting any improvement in the magnetic field. It seems to be the same, weak size. Am I doing something wrong, or do I just need to step the size up? Thanks!

Posted by Bran 11 years ago


PALM TREE FRONDS

Hi, We are trying to figure out what kind of material and process to make somewhat realistic palm fronds for our Christmas pageant. We have an 11-foot trunk using a carpet core, which I curved by putting pressure on it overnight.  What should we use for the fronds?  Any ideas to make some that are somewhat believable. I want to get beyond a cardboard cutout. Any ideas from you would be appreciated. Thanks gbhildebrand

Posted by gbhil 8 years ago


Coming soon: Hire Kiteman!

I've been threatening to do it for ages, and now I am... I have started my own company, LightWorks Laser Projects. It's incorporated and everything!  When I start trading for real, the core business will be laser cutting workshops: I bring my laser cutter to a venue, you bring your ideas, and together we get creative. Between workshops, I will be running commissions for select customers. So, keep an eye out for future announcements...

Posted by Kiteman 4 years ago


My Computer Is VERY SLOW!

My computer was running perfectly fine and fast two days ago. It is a quad core 3.2 Ghz processor, so it should be very fast. I checked my temperatures and they were normal. I even reinstalled windows to make sure that I didn't have a virus that just couldn't be detected. For one, it took about 7 hours to install windows 7. I had to go on a different computer to even post this question. Any ideas on how to fix this? Thank you.

Posted by noobererer 8 years ago