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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.
A 62 mm square, 19 mm tall adapter that lets a NEMA 17 stepper bolt into a machine face drilled for NEMA 23 — the base carries the 47.14 mm M5 pattern, the raised Ø52 tower carries the 31 mm M3 pattern with a 22.4 mm pilot register for the motor's centring boss. The hollow Ø30 core clears a shaft coupler, a 14 mm side window gives Allen-key access to the coupler set screw, and counterbores in the base bottom fully recess the four M3x20 motor screws so the adapter still seats flat.
A 28 mm tall tapered duct that lets a 60 mm fan feed an 80 mm fan opening (or vice versa): 80 x 80 mm flange with M4 clearance holes on the 71.5 mm pattern at the bottom, 60 x 60 mm face with four 3.4 mm self-tapping M4 bosses on the 50 mm pattern on top. The airway necks smoothly from 73 mm to 55 mm with a 2 mm wall, so it replaces a grinder/zip-tie bodge on amp racks, 3D-printer electronics bays and PC cases.
A 144 mm desk plate with three real meshing gears — a 24-tooth crank wheel with a domed finger knob driving two 14-tooth pinions, all captured on mushroom-cap posts. Prints fully assembled, no supports: four separate pieces, 0.45 mm clearance everywhere, spin the knob and the whole train turns.
A 139 mm print-in-place centipede: eight leg-bearing body segments joined by seven captured ball-and-socket joints, so the whole body ripples and curls in your hand. Prints fully assembled, flat on the plate, no supports and no assembly.
A one-handed reading aid: slip your thumb through the 22 mm ring and the two 29 mm wings press both page blocks flat so a paperback stays open by itself. Ramped wing tips slide under the pages without creasing them; 80 mm wide overall.