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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 handheld drill guide with five tall bushing towers (3.2, 4.2, 5.2, 6.4 and 8.2 mm) that keep a bit perfectly perpendicular, plus a 90° V-groove underside that self-centers the holes on dowels and round stock. Block is 102 x 36 x 44 mm.