Just added small slots to the main bodies of this great model to prevent the wires to ‘disappear’ inside the spool holder. Wires can be pinched in these slots, this should work for various diameters of wire (tested with 24AWG and 26AWG silicon wires).

Thanks a lot to the creator for the original model! Please see there which parts to print and check for further assembly instructions.

Edit 16.04.2026: Added left side cover from original model (based on feedback in comments).