Z Axis Coupler round shafts on both ends, 5mm each

thingiverse

I've reworked this print specifically for Prusa i3 and its variants, making use of round shaft holes on both ends, one sized for a 5mm motor shaft and the other for an M5 threaded rod. This design prints upright. With .3mm layer thickness and 30% infill density, it's sturdy. I favor HIPS as my go-to material due to its ease of printing and lack of warping or peel. Print settings are key: a temperature-controlled hotend at 240°C, a heated bed set at 90°C. Shell thickness comes in at 1.6mm with four hotends combining for a .4mm layer height, and the top and bottom shells measure 1.2mm each. Solid bottoms enhance print stability while allowing faster cooling of layers. Print speed is maintained at my preferred rate: 35mm/s. During printing, ensure the inner 5mm hole is adequately sized by measuring against your chosen shell dimensions; if necessary, a 13/64 drill bit will fine-tune the diameter to precision specifications. This build requires four M3x16 screws and their respective M3 nuts for structural integrity.