Reborn Hand

thingiverse

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 3D printed prosthetics to survive the tropics, we need to remove components not well-adapted to hot weather. We therefore set out to replace all rubber bands in the Phoenix hand. Palm: We used the One-Arm palm designed by below_cho as our starting point. All cable tunnels have been widened, knuckle stumps removed, and a bar added at the thumb base for tying elastic cord. Palm mesh: we modified the thick palm mesh by John Diamond to strengthen screw holes. Fingers: Tunnels created so an elastic cord can now run all the way from finger tip up into the palm. Pins: For snug fitting, some 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: ::: 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. http://www.thingiverse.com/thing:1672381 http://www.teamunlimbited.org/the-unlimbited-arm-20-alfie-edition-current/ 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 strong enough to hold the elbow in place for very long. So we advise 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 Additional materials: 1) Braided fishing line - 80lb. http://www.ebay.com/itm/KastKing-SuperPower-Braided-Fishing-Line-330-yds-1100yds-SELECT-LB-TEST-/190909992257?var=&hash=item2c731f4d41:m:m6k91tkQ1bIzQbS8tDpHzaQ 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 7) Adhesive Foam - 5mm thick https://www.amazon.co.uk/Self-Adhesive-various-including-padding-Outfitting/dp/B002GUB9R0/ref=sr_1_5?s=sports&ie=UTF8&qid=1491140349&sr=1-5 8) 13mm binding screws for the elbow joints (use superglue or Loctite to prevent loosening). 9) Loctite 243 seal thread http://www.ebay.com/itm/121826873262?_trksid=p2057872.m2749.l2648&ssPageName=STRK%3AMEBIDX%3AIT