Dual Material Link for Third Hand

This project file is set up for Prusaslicer to print a slightly enlarged ball portion in flexible filament (I used Fillamentum 98A Flexfill) and then a pause for you to change out for Prusament PETG for the remainder. 

IMPORTANT NOTE: Be sure to raise the temperature of the PETG layer to 250C on your printer and the flow rate down from 95%to 90% right before the filament change . This can be done via gcode automatically after the pause if you know what you are doing.

The reason I did this is to prevent the degrading of the joint over time with the softer, but resilient, TPU surface on the ball.

Edit: Adding a thick lubricant like petro-gel and a tiny bit of sand to each joint has dramatically increased the holding power while retaining its mobility. I highly recommend it.