Based on CWKWorkshop's plans for a sub-$50 pickup winder, except using a 3D printer to build the housing and supports. The "roof" was hand-drawn in TinkerCAD; feel free to customize it to your liking.

Measurements were made with a digital caliper; to my chagrin, dialing in the EXACT measurements made it impossible to actually fit anything. An additional 1-1.5mm spacing made things decidedly easier to put together.

You'll need a jig to actually attach the pickup bobbin to the machine. 402FPV's design should work well for this purpose.

Printed with the Ender 3v2.

Creality

Ender 3

No

Yes

200

20

The roof cover is, to my experience, best printed vertically with standard zig-zag supports. A horizontal print should be more reliable... but require a lot more support. You should be able to customize it and replace it with flatter geometric alternatives; I merely chose a curved roof because I thought it'd look cooler.