lightweight filament spool holder for 2x4 wood beam

myminifactory

This is my entry for 3D Printing Nerd's spool holder contest. I've managed to create a design that uses very little material while still delivering high stiffness. It can securely hold spools up to 95 mm wide. To test its durability, I printed it with 3 shells, 4 top and bottom layers, no support, and a 0.2 mm layer height using a 0.4 mm nozzle. The outcome was a material consumption of just under 25 grams.