Z-Mounts with Increased Y-Gap for Box-Frame Prusa i3

thingiverse

To increase your printing volume on a standard Prusa i3, address the tight gap behind its Z-axis. In my case, the X-carriage rear collided with the frame when moved beyond the main cut-out. Longer extruder motors (over 43mm) also face this issue. While a single sheet frame can be fixed by lifting corners with spacers, a box-frame requires a different approach as lifting corners moves lateral screw holes away from the center. To solve this, create custom Z-mounts with an extra Y-gap parameter. A value of 0 keeps gap same as original, while higher values move Z and X axes further from frame. The mounts' front and side screw positions match originals, allowing use of existing screw holes. Customize the provided SCAD file for special requirements or print "ready-to-print" STL files for extra Y-gaps and box-frame thicknesses. Attach Z-endstop sliders to left motor mounts with enhanced versions of SCAD file and STL files, which also work with Split X-ends for Prusa i3. Remember that using mounts upside down is a matter of personal preference.