Motorised Solder Holder

This project came about as a way to:
a) Speed up the process of tinning wires
b) Reuse some old 3D printer parts that were gathering dust
It seems to do a pretty good job of both of these tasks.

I ran the print at 50% infil in PLA. seems sturdy enough.

1) Print the two parts linked below.
2) Remove all the machine screws from the stepper motor
3) Sandwich the motor between the two pieces of print, with the circuit board on the back.
(Use the fiber washers to ensure nothing shorts against the screws.)
4) Screw the extruder into the front of the stepper motor.
5) Set the tension by selecting an appropriate spring, and add the rubber o ring to the idler. This stops it chewing up the solder as it feeds.
6) Build up the footswitch, a simple NO button in a project box. The lid is laser cut perspex, but you could just drill it out. I also used a cable gland to clamp and protect the cable.
7) Connect eveything up, hope it works!

Electronics:

This requires fa