Unlimbited Arm: Matteo Release

thingiverse

This e-Nable arm is a release adapted from the Unlimbited arm 2.0 Alfie Edition. It has been developed by Patrick and Philippe from the French hackerspace "Laboratoire Ouvert Grenoblois". They created it for a 6-year-old boy called Matteo, giving the name of this release. The story of this arm is told here (in French), and some technical aspects are described here (in English). I designed this e-Nable arm using the parts generated by the OpenScad file provided with the Unlimbited design. In this file, for the case of Matteo, I used the following parameters: LeftRight = "Right"; HandLen = 140; ForearmLen = 180; BicepCircum = 160; CuffLength = 70; PinHoleDia = 3. There is a new version of the whippletree. It will be more compact and does not need the fork pivot to fix the main tendon. Simply pass the main central tendon in the hole and block it with a big knot or a knot on a bead. The other modification with this whippletree is that you can either pass the two pairs of tendons for fingers through the rounded holes, or insert a PTFE tube (outside diameter 3mm) where the tendons will be able to slide very gently. To answer a recent request, you can now find a version of the hand without the "M" logo. The STL file is ready to print, at the original size, or you can use it to resize and add your own logo if you want (use any STL editor). The file is "hand_without_logo". I would like to highlight our new web site where you can find most of documentation we wrote about our various developments. There are the French and the English side, with different contents: you should have a look on both sides!