Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!
by enablesierraleone, published
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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!
e-NABLE Sierra Leone - Facebook
e-NABLE Sierra Leone - CrowdFunding
Albert Fung - designer
Hong Kong Maker Club - collaborator
Raise3D HK Printer - manufacturing
Printact 3D Printer - prototyping
::: Construction notes :::
For a wrist-powered prosthetic hand, please use the Reborn Hand with a thermal gauntlet.
http://www.thingiverse.com/thing:864030 and tensioner/tensioner pins from the Raptor Reloaded. http://www.thingiverse.com/thing:596966
For an elbow-powered prosthetic arm, please use the Reborn palm with the "forearm" and bicep "cuff" from the UnLimbited Arm (see link). There is a glitch in the Thingiverse Customizer, so you will need to set the UnLimbited "hand length" to at least 145mm. Otherwise the forearm wrist joint would not be wide enough to fit into the palm.
We printed the Reborn hand at 124% and used it with parametric forearm, cuff and tensioner pins from the UnLimbited Arm(v2.0). From our field experience, the UnLimbited Arm cuff pins are not stronger enough to hold the elbow in place for very long. So we advice everyone to use Chicago/binding screws (glued) instead.
Scaling the ReBorn Hand parts at 124% would give you:
Palm width (widest): 80mm
Wrist joint (outside): 75mm
Wrist joint (inside): 64mm
2) Elastic cords - 1.5mm - for hands printed at 100% or above
3) Screws - for tensioner block - Hands printed at 124%:
single thread woodscrew 3.0 x 30mm
4) Screws - for palm mesh printed at 124%:
Reassure R2 - full thread woodscrew 3.0 x 16mm
5) Silicone fingertip grips - Tipper Lee, and superglued to secure them to the fingers
6) Velcro - 1 inch thick double-sided
8) 13mm binding screws for the elbow joints (use superglue or Loctite to prevent loosening).
9) Loctite 243 seal thread
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Reborn Hand by enablesierraleone is licensed under the Creative Commons - Attribution license.
What does this mean?
- You must attribute (give credit) to the creator of this Thing.
- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
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