Solder Wire Holder

thingiverse

This is a straightforward holder for soldering wire on a platform. The platform and base are connected with a bearing for smooth rotation. You can design and print a simple cylinder part that will fit loosely between the platform and the pin on the body instead of the bearing, just enough to support it. Apart from the 3D printed parts, I also used: - 1 x 608 standard skateboard bearing (8mm core, a 22mm outer diameter and a 7mm width) - 2 x M3 nuts - 2 x M3 screws (length can be between 8 and 12mm) The tolerances are quite low and set according to what I normally use for my Prusa MK2. There are several options to fit the bearing if the tolerances are not okay with you: 1. One option is to sand the inner diameter of the platform and the pin. 2. Use a hot air gun or a hairdryer to soften the plastic so you can push the bearing in. 3. If it's too loose, use some heat shrink tubing to widen the diameter of the pin. 4. If it's loose, use a drop of glue on the outside and the inner diameter of the bearing. You can also 3D print tube adapters to fit different diameters of the solder spool. I wanted to use the retract screw to wind the wire back but it doesn't work well as you still have to rotate the actual spool with your hand to wind the wire back. One idea for the retract screw is to print some mini figures that you can glue on top which will rotate with your spool.