Shaft Couplers #04 – Rigid 5-5 / 5-8 / 8-8 / 5-6.35 / 6-8 mm + Flexible Helical 5-8 mm Coupler | M3 Set Screws

**Shaft Couplers #04 — part of the Maker Mechanics series.** Join a motor to a lead screw, a shaft to a shaft: five rigid couplers (5-5, 5-8, 8-8, 5-1/4 inch, 6-8 mm) and a flexible helical 5-8 mm coupler that takes up small misalignment on Z axes and lead screws. Two M3 set screws per side with captive nut slots. ### All versions in one download - **rigid 5 → 5 mm** — `mm04_shaft_couplers_rigid_5-5mm.stl` (20 × 20 × 26 mm) - **rigid 5 → 8 mm** — `mm04_shaft_couplers_rigid_5-8mm.stl` (20 × 20 ×…

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