Step 14: Motor Coupling

  1. The coupling is simply a metal rod connector doodad thingy.  Yep, awesome when I'm trying to sound technical. 
  2. Just thread it over your 3/8 crank shaft axle, and drill a hole through it all.
  3. Weld it down tight.  The other end is open and will connect to the motor.
Pictures will be uploaded shortly showing the various stages of the finger joints being tumbled in the rock tumbler
<p>hi iam a kid of 15 i would like to make this so plz help me out with the code.my gmail is jeyasuriya2001@gmail.com i'll be looking forward for a reply</p>
<p>Sorry, I think you have to be more specific as to what help you require. This is mechanical, no microprocessor so no code.</p>
Love it I gave it five stars. I'm making one<br>Greg
<p>hello Greg i wanna make one plz help me out my gmail is jeyasuriya2001@gmail.com aim just 15</p>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <strong>As Borat would say, &quot;Very nice how much!&quot; </strong><br> <br> <br> Watched your video and feel consoled that I am not alone with messy workbench :). By the way, why robot (your gender) would need the bathroom eh?
messy workbench is my life... no matter how i try to keep it clean, lack of space. Robot boy might be better i guess
coolest thing ever<br>
hola soy de mexico realmente excelente un buen trabajo muchas felicidades ahora yo estoy trabajando en algo parecido me encantaria que me atudaras con imaenes de como lo fuiste realizando para darme grandes ideas por que eso son grandes ideas tuyas y bueno gracias por la ayuda
gracias feliz de ayudar a
Wow! what a great technological idea<br><a href="http://www.stroy2010.ru/brigada-stroitelej.html">brigada stroitelej</a>
Thank you!
Wow, that's really well done, just imagine the look on peoples faces if you could attach this to your shoulder and put your hand into your shirt :D!
Your design is just same like my design.but my design are more cheaper.<br>here's the link to my design<br>http://ideaprojektahunakhir.blogspot.com/2010/11/robot-arm.html
I'm working on something very similar to this, only made from cheap and easily found materials, with a goal of creating a working prosthetic for no more than $50. I can see the basic design of the fingers from the pictures, but I'm curious exactly how the joint pins are put in? I assume they have to be removable, yet permanent enough not to fall out. Your project looks great, and I also learned to avoid using guitar strings from reading your comments. One less failure for me to learn from! :) Good luck in the contest.
Simple to do, tricky to explain. Imagine having a block of aluminum, with a hole drilled right through it. Now insert a steel nail, screw or bolt of the same size as the hole through it. Now one end of the block will have the large head coming out of it, while the other will have the tip protruding about 1/4 of an inch. With a welding unit, ground to the aluminum block. next briefly touch the tip of the electrode to the tip of the protruding steel nail. It tip will turn molten and will flow out making a molten rivet head. The rest of the steel nail will be kept cool being in the block of aluminum. Steel and aluminum will not fuse together except with very specialized equipment. To remove it, you simply, carefully grind just the steel tip off. When I was doing the setup of the project I just used cotter pins to temporarily hold it all in place, then when I was ready I would weld it. Hope this helps, and good luck. With scrounged materials this could be built almost for free, the tricky part is the tools to do it with. Having a welder and an angle grinder are key if using steel and aluminum. If this is for a real prosthesis, you would want to do away with steel all together. Perhaps some of the new low heat mold-able plastics. For the fingers, why not try casting oogoo, over aluminum tube frame. The aluminum would serve as the cable housing and for attachment purposes. The oogoo would provide the needed bulk and provide a grippy skin like surface. Oogoo can be found on this site, hope this helps
Neat trick, but not useful for my application. Thanks for the explanation!
Awesome Job!!!
Very interesting. I wonder if some cheap guitar strings (or piano wires?) could be used for the control wires. As for a drill press, might try Harbor Freight. They have some incredible tool deals; I think I paid $50 for mine.
Of course, the strings would work but I would stay away from any coiled wires. Issue there being the stretch factor. Guitar strings often have to be re tightened as they stretch with use, all though it would be tiny and over a long period of time. Princess auto is the harbour freight of Canada, and I'm waiting for sales
Thanks everyone!!!!!!!!!!!!!!!!!
great job i voted!
Very cool! I think you used every last bit of the 9 metric tons of patience...It also looks like it got the black cat seal of approval- always a good thing.<br><br>Here's my kitty- http://i168.photobucket.com/albums/u177/JKelty/MaxTheCat2.jpg
Ooooh , wow I can't wait to see how the rock tumbler did it's magic. This is truly cool. I Iook forward to more of your Creations. Yay.

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Bio: See some of my work here and as always accepting orders for custom design and fabrication as featured on Discovery Channel, Wired Magazine, Gizmodo, Engadget ... More »
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