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Reborn Hand

by enablesierraleone, published

Reborn Hand by enablesierraleone Mar 31, 2017
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Summary

This is a Remix of the Phoenix Hand & UnLimbited Arm, designed by Albert Fung. This project is a collaboration between e-NABLE Sierra Leone and the Hong Kong Maker Club.

It became apparent in our previous feasibility study that for the 3D printed prosthetics to survive the tropics, we need to remove components that are not well-adapted to hot weather. We therefore set out to replace all the rubber bands in the Phoenix hand.

Palm: We used the One-Arm palm designed by below_cho as out starting point. All the cable tunnels have been widened, the knuckle stumps removed, and a bar is added at the thumb base for tying elastic cord.

Palm mesh: we have modified the thick palm mesh by John Diamond to strengthen the screw holes.

Fingers: Tunnels have been created so an elastic cord can now run all the way from the finger tip up into the palm.

Pins: For snug fitting, some of the pins have been resized and reshaped.

Hope you'll find this new remix useful!

Ed Choi

Links:

e-NABLE Sierra Leone - Facebook
http://www.facebook.com/enablesierraleone

e-NABLE Sierra Leone - CrowdFunding
http://www.GoFundMe.com/enablesierraleone

Albert Fung - designer
http://albertfung.ca

Hong Kong Maker Club - collaborator
https://www.facebook.com/hongkongmakerclub/

Raise3D HK Printer - manufacturing
https://www.facebook.com/raise3dhk/

Printact 3D Printer - prototyping
http://www.printact.co

Print Settings

Rafts:

Yes

Supports:

Yes

Infill:

30%


Notes:

The Reborn hand is compatible with the UnLimbited Arm.

We printed the Reborn hand at 124% and used it with forearm and cuffs from the UnLimbited Arm(v2.0).

Scaling at 124% would give you:

Palm width (widest): 80mm
Wrist joint (outside): 75mm
Wrist joint (inside): 64mm

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Jun 6, 2017 - Modified Jun 6, 2017

I'm happy that rubber bands will not be needed for this hand! One question: In the summary, you mention "Palm mesh: we have modified the thick palm mesh by John Diamond to strengthen the screw holes." I do not see a modified palm mesh in the list of files for this thing.

Palm mesh for the e-NABLE Phoenix hand

Hi CaptObvious. Thanks for the comment. The new meshes are up now. They were lost in multiple rounds of updating. Thank you! - Ed

Would the gauntlet from the Phoenix V2 work with this model palm? Thanks.

Hello Mr Joeyman,

Yes it would work with Phoenix V2's gauntlet, as long as you scale them to the same %.

Have fun with it!

Ed

May 2, 2017 - Modified May 2, 2017

I have made a child sized Phoenix. I would like to make this reborn for an adult. What are the sizes for the adults in the videos, and for the example picture on this page? Are they scaled to a particular percentage, from a standard of a 100% sized model? Or is this model already set for an adult size.

(I am assuming that the model for download here, will download in a 100% size measurement for comparison, ie.. can be scaled to different percentages for different fits)

Hi Mr Joeyman,

Yes the download size is 100%, comparable to the 100% Pheonix hand. I then scale the palm/fingers up to 124% to use them with the arm parts of the UnLimbited Arm.

At 124%, the palm's wrist joint is 7.5cm wide.

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