Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Stackable Nut And Washer Sieve Tray
A 110 x 110 x 30 mm sieve tray for sorting a can of mixed nuts, washers and small screws. It has a 2.4 mm floor with a hex grid of 6.5 mm holes, so anything with a smallest cross-section under 6.5 mm drops through when you shake it. Each tray has a chamfered 104.4 mm spigot on the bottom that seats 0.4 mm inside the 105.2 mm rim of the tray below. Reprint it with a different HOLE value to make a coarse-to-fine sieve stack, then tip each tier out through its finger notches.
Office Chair Gas Lift Stop Collar
A snap-on split collar that stops a sinking office chair: it clips around the exposed chrome gas-lift piston rod (fits rods up to 30 mm through a 27 mm funnelled throat) and bears the seat's weight in pure compression on the cylinder or cover rim. 54 mm OD, 30.3 mm tall for ~28 mm of lift per collar, with a cone-in-cone spigot so two or three stack to set any height, and a 4 x 2 mm groove around the outside for a zip tie so it can't drop off. Replaces the split-PVC-pipe hack; no need to pull the seat off the chair.
Raspberry Pi 4 Stack Deck
A stackable 96 x 84 x 28 mm deck for Raspberry Pi 4B / 3B+ cluster builds: each board bolts to four 6 mm standoffs on the verified 58 x 49 mm pattern with 2.9 mm holes for M2.5 screws, and the 14 mm corner posts peg into the socket of the deck above for a 28 mm stack pitch (16 mm of free air over each board for a HAT or fan). Three large windows give vertical airflow, plus two 4 mm cable-tie slots and two M3 clearance holes so the bottom deck can be screwed to a wall or panel.