These can be hung over your door easily and offer a convenient place to hang various items. The smaller one I personally use for hats, and the larger one is strong enough to hold my backpack with a heavy-ish (7.5lb) laptop in it, plus a charger, water bottle, coffee thermos, and whatever other junk I have in there.

The smooth design offers few stress concentrations, with the only sharp corner being what keeps the hanger from pulling forwards off the door.

I printed these with enough walls to fill up the entire model. This way, the stress is carried through the continuous strands of filament and is not transferred across the weaker strand connections that you would otherwise have with only a few outer walls and 100% infill.

Give it a test! Try it with different filaments and maybe let me know what the limits are!

FLSun Q5

No

No

0.2

Print with enough walls to fill up the entire volume for maximum strength. Don't fill it with infill. Infill is not printed in line with the forces.