Adderini slingshot arm for TheraTube

thingiverse

Slingshot arm for Adderini with Theraband Tube Silver elastic bands mounted in double configuration (as in the photo), if you do not want to use the original Theraband elastic band. There are 2 versions: the "SlingshotArm_ (right)" which requires subsequent sandpaper application, and the "SlingshotArm_Teethed_ (right)" which is being tested (I don't know if work fine). To print the LEFT piece simply mirror the parts on the build plate in your slicer. To mount this adapter you will need: - Nr. 2, M3x12 countersunk head screws - Nr. 2, M3x16 countersunk head screws - Nr. 1, M4x40 cylindrical head screw - a piece of 120 grit sandpaper How to assemble: The printed pieces must be cleaned from the supports and sanded with a fine grain to facilitate the sliding of the "SlingshotArm" piece into the "SlingshotArm_Cover" piece The sandpaper must be applied as in the photo using cyanoacrylate glue, to increase the grip of the inserted tubes, preventing them from slipping out. The assembly requires a bit of practicality as you have to press the two molded parts firmly while holding the two tubes in place, and then screw the screws into the already threaded holes. Last 3 photos shows the way of positioning tubes aligned and marked with a brush after the printed block is closed, to secure and check in case of tube slipping out after many shoots. The length of each tube (which is then folded into two parts exactly like the elastic band) must be about 20cm in the case of silver color (50KG traction). It is then possible to carry out tests and possibly shorten it by 1cm at a time, until the maximum traction is found with the Adderini gun.