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Topic: Mechanical Hand  (Read 10795 times)
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ChainCrafts
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The Nyckelharpa is a lovely, strange beast!


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« on: April 03, 2011 10:47:10 AM »


It lives!!! Now my plans to destroy the world via a very indirect and overly complicated method can be realized!

This hand is a fully-functional costume prop. Each finger is controlled by the corresponding finger on the wearer's hand by a steel cable. The fingers return to their "neutral" (starting) position with the assistance from springs located at each joint underneath the knuckles. It's articulated enough to grant the ability to pick up and drop objects.

Here is a video of it in action: http://www.youtube.com/watch?v=dEHiAItVdiw

I have a description of the build process on my blog: http://chaincrafts.blogspot.com/

**UPDATE**

After a request from araminya, here are a few more images:


A close up of the fingers in the relaxed position


A close up of one of the fingers in the flexed position. To answer Araminya's request, the fingers are operated via cables that pass through guide loops. They then return back to their neutral position with the assistance of the springs that you can see in the pictures.


Finally, here is a close-up shot of the finger-loops. The thumb loop is a bit too small, so that will require a minor adjustment in the near future.
« Last Edit: April 05, 2011 08:58:01 PM by ChainCrafts » THIS ROCKS   Logged

N30Nb100d
« Reply #1 on: April 03, 2011 10:58:59 AM »

Nice. Looks really fun to use too. How did you end up dealing with the sharpness of the wires?
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Belladune
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'darn kids, they were pesky from the start' D. Lee


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« Reply #2 on: April 03, 2011 11:19:57 AM »

That is only mildly creepy.  And really really cool!   
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« Reply #3 on: April 03, 2011 12:16:45 PM »

This is awesome!
The size makes it's kind of creepy fun.

DO you have a costume in mind to use this one for or is it a sale piece?
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I have a wooden spoon!


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« Reply #4 on: April 03, 2011 12:23:01 PM »

wow!...well, I, for one, welcome our new giant-robot-handed cyborg overlords. All hail ChainCrafts!
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« Reply #5 on: April 03, 2011 12:23:55 PM »

whoaaa.  I watched the video and I so want one of these.

I'm sure I could think of something to do with it.  Cheesy


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ChainCrafts
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The Nyckelharpa is a lovely, strange beast!


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« Reply #6 on: April 03, 2011 01:18:43 PM »

Nice. Looks really fun to use too. How did you end up dealing with the sharpness of the wires?
My initial finger prototype very quickly showed me how desperately I needed to deal with that very issue (I have a few cuts on my hands at the moment Wink ). What I ended up doing was utilizing my cable ferrules to contain the sharp ends of the cables. Here is what a ferrule looks like:
http://http.cdnlayer.com/ec1images/225/products/9/998013274_082407_dv.gif
When creating the loops for my fingers, I made sure to insert the rough end of the cable so that it was either flush with, or slightly inside, the end of the ferrule. Then, when I flattened the ferrule to set the cable in place, the sharp end was locked inside, thus saving my fingers and hand.

The cables are still uncomfortable on the fingers, but I'll solve that with a pair of tight leather gloves (black of course Wink )

This is awesome!
The size makes it's kind of creepy fun.

DO you have a costume in mind to use this one for or is it a sale piece?
Well.... I guess the answer is YES! I know that is a silly answer to a this or that question, but I plan to do both. In the short term, I am using the hand as part of a costume that I'll be wearing to a Sci-Fi convention that my wife and I are attending. We're both going for a look that feels like a fantasy version of the old west meets the WW2 era. Along the lines of a bomber pilot who fell into a rift in the space time continuum and landed in a parallel reality in the 1860's. I'll update this thread with a picture of my complete costume once I get the final piece, a fun piece of head-ware that I purchased from a leather company.

In the long term, after the convention perhaps, I'll make hands like this available for purchase. I will, however, be abiding by the rules of Crafster so I won't be posting anything about it when the time comes. It will just appear on the web somewhere Wink
« Last Edit: April 14, 2013 07:57:27 PM by meleriffic - Reason: changed non-working images to links » THIS ROCKS   Logged

shellbell005
« Reply #7 on: April 03, 2011 02:04:36 PM »

All I can say is this is FANTASTIC! You are very skilled. Keep up the great work!! Make sure you post costume pictures afterwards! I was trying to imagine you're costume, and I doubt I got it right.
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Eodril
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Armed and Dangerous


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« Reply #8 on: April 03, 2011 02:48:31 PM »

Quirky.  In a GOOD way!  So what are you planning for lefty?
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ChainCrafts
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The Nyckelharpa is a lovely, strange beast!


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« Reply #9 on: April 03, 2011 03:01:25 PM »

Quirky.  In a GOOD way!  So what are you planning for lefty?

Lefty is going to be left free so that I have a hand with which I can dig in my pockets, feed myself etc (although I did toy with the idea of making a fork and spoon accessory for the hand, lol). I will, however, have this on my left shoulder:

(credit for the photo goes to Jen Martin Studios, models are Michelle K. & Andrew Figgs)
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