Gridfinity sewing (or tool) box

Tested with 0.4mm nozzle / 0.2mm layer height but I imagine other combinations would work. I had build plate adhesion issues, so I'd recommend using a brim.

You'll need to print 1x base tier, 2x mid tiers, 2x top tiers, 2x lids, 8x short arms, 4x long arms. Requires countersunk M5x10mm machine screws (28x). You might be able to get away with #10UNCx3/8" countersunk.

Check that screws fit in the arms, if they're very tight you may need to start the screws in the holes first. Do NOT overtighten at this stage or they'll poke out the other side of the arm spoiling the look.

Assembly: start at the base tier, screw in 4x short arms and 4x long arms - tighten until snug but not too tight that it doesn't rotate. Move on to the mid tier, attach the last 4x short arms first before attaching on to the arms from the base. Screw on the top tier. To attach the lid, you'll need a length of filament, there is an angled hole from the bottom, hopefully you'll be able to get the filament through, but it can be tight. Thread the filament through the holes in the lid and the top tier, trim off excess filament.

Theoretically you can add extra middle tiers, but it would probably topple over in use.

Designed to fit 4u height gridfinity in the mid and top tiers, 10u height in the base.