Empty Spool Closet Door Hanger

An over-the-door storage system for empty filament spools. I designed this specifically for the bifold closet doors in my maker space. The hanger needs > 3mm of clearance at the top and 7.5mm behind so it will not work with most doors. It will accommodate a 30mm door. Everything is designed with 0.15mm of clearance.

I wanted to be able access the spools from either end to make it as easy as possible to get to a specific spool. The top shaft lifts off and the bottom screws together. Empty filament spools seem to average about 250g so I fully expect creep to set in, I'm keeping an eye on how fast it happens with PLA.

Print instructions

Print Settings

Printer Brand: Prusa
Printer: I3 MK3S
Rafts: No
Supports: No
Resolution: 0.2
Infill: 20%

Filament: eSilk PLA Silver
Notes:

Given the weight I went pretty beefy. Three perimeters and 20% gyroid infill. The door hanger should print on its side to avoid overhangs and so delamination of layer lines isn't an issue.

Post-Printing

Top shaft post printing

There's a 0.2mm sacrificial layer on the top shaft so it can print with contiguous bridging and doesn't require supports. I used a drill bit to clear out the cord path.