This is a multiboard version of the modular wire spool holder.

It snaps in the multiboard using Push-Fits. You need to have a Multiboard Snap to attach it to the board: https://www.multiboard.io/parts-library/snaps

There is a builtin support that needs to be cut with an exacto in the front wire slot.

It is compatible with the original spools from the Modulare Wire Spool Holder, but you can also use my redesigned threaded spools to go with it. Another redesign to remove the need for screws or glue.

https://www.thingiverse.com/thing:6436132