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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 printed beam-flexure shaft coupler that joins a 5 mm stepper shaft (NEMA 17) to an 8 mm T8 leadscrew, with three 60°-indexed relief slots so it absorbs misalignment instead of binding the nut. 20 mm OD x 44 mm long, 5.3 mm and 8.6 mm bores, four M3 self-tapping grub screws (two per hub at 90°).
A 110 mm wall-mounted entryway rack with a 38 mm deep pocket for letters and bills plus three angled hooks with catch lips for keys. Two keyhole slots let it drop onto drywall screws at 88 mm spacing.