Adjustable locking arms for various uses.

thingiverse

Video here: https://youtu.be/aZH75SxCcmM An adjustable arm that locks in place with a twist. The string threaded through the joints is tightened to lock them in place, resulting in an articulated arm strong enough for most uses that can easily be 3d printed. The Hand attachment is print in place. 3 M2 by 20mm (ish) screws are used to attach the handle to the ratchet gear and provide reinforcement. One or two smaller M2 bolts and nuts can be used to attach the ratchet locking arm to the body. Custom joints can be created by adjusting two parameters (length and angle) in the f3d backup file. Different attachment mechanisms can be easily swapped with printed M14x2 threads offset 0.2mm inwards, though tolerances are printer-dependent.