Wall mounted spool holder

I made a wall mounted spool holder, i mainly use this as a quick location to temporary store spools being swapped, or for storage of empty refillable spools. The holder comes in two parts, the end piece isnt designed to lock the reel in but instead provide a lip to stop easy roll off, i wouldn't suggest printing directly from this without increase the size of the outer piece. The model uses 4-5mm screws that sit into an internal lip.