Soldering them by hand is simply boring, and 3D printers are cheap ... extruder that pushes a spool of solder through a PTFE tube. The GCode for this soldering job was created manually, but ...

All 3D printer filament benefits from being kept ... a small hole and 3D-printed fitting that also uses a bit of spare PTFE tubing. The box doubles as a convenient container for it all.

You have access to a printer that can print ABS parts (the stock Ender 3 with the white PTFE tube and non-all metal hotend is not recommended or even really safe to print ABS with) You are familiar or ...

The first step is to 3d ... tube with a 1/2in bearing and 4mmSpectrym accepts a 2mm ID x 4mm OD tube with a 3/4in bearing. On top of this 4mmSpectrym requires a 1mmID x 3mm OD silicone tube to serve ...