ball joint for prosthetic elbow
thingiverse
thi is the elbow part for e-nable france project to make a mechanical Arm to adapt Hackberry Hand. Work still in progress as of december 2019 I use a tension spring 5mmx20mm 0.8mm wire Still under progress for deporting the command in the forearm with string into PTFE tube The elbow is made of a joint ball that can be lock wth inner small 6.35mm balls. Parts E1 and E1 are the external rotula Parts I1, I2, I3 are internal rotula Arm part is https://www.thingiverse.com/thing:4009877 Hackberry hand can be found on github The anchor and the base are made specifically for a 12 year old boy without left arm.
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