NIOP Kwawu remix

thingiverse

This is a custom adaptation of the popular Kwawu Arm by Jacquin Buchanan, designed to work seamlessly with the NIOP modular arm catalog. It's specifically created for individuals who are transhumeral (above-elbow) amputees or have limb difference without an elbow. This module includes the hand and forearm components that directly connect to the NIOP Shelbow module https://www.thingiverse.com/thing:3639811, and Helix Cuff https://www.thingiverse.com/thing:3639770 (as shown). To secure the drive-line, you'll need the Brace Plate https://www.thingiverse.com/thing:3712119. The TPU hinges have been enhanced to require less pull strength to close the hand, and the NIOP Wrist Pin demands minimal clean-up and snaps into place. Once the Wrist Retention Ring and Stopper are added to the wrist connection, it becomes extremely strong and limits the range of rotation to that of a natural wrist. The completed arm (Kwawu/Shelbow/Helix Cuff at 100% size) weighs 1lb 9oz [737g], including hardware. It's strongly advised that you consult with a professional prosthetist for guidance before using this device. Improperly fitted devices can cause permanent damage to the wearer, so seek expert advice. If you're unable to afford a doctor or live in an area where they're unavailable, visit enablingthefuture.org to find a volunteer prosthetist who can assist. An OpenSCAD file for sizing the device is coming soon! Temporary Sizing Method - The 100% arm size is based on a forearm length of 220mm. This measurement is taken from the crease of the elbow to the crease of the wrist. To determine your print scale, divide your forearm length (in mm) by 220. The resulting number is your scale factor to use in your slicer. For bilateral recipients, this device was designed for someone 5'-6" tall. Since the Helix Cuff is adjustable, the device can be sized by making the forearm length proportional to the recipient's measurements. These STL files are made for a left arm device. Most parts (excluding the switches and pins) should be mirrored for right arm devices. Assembly Instructions https://docs.google.com/document/d/13VLW0BEGWytAss0vmlA_FSM1s5sgCWiQNSQEWfPTh58/edit Links for Materials https://docs.google.com/document/d/1_i3BSe7nnHnZhTax_osXeQR7MjQyPMPcE9OXrI1mpeA/edit