Summary New and improved! Fixed hole sizes and, more importantly, the distance from the z-axis shaft to the z-axis rail (holes). That distance is best measured when the z-motor is at the very top, which original design possibly didn't take into account. Files: STL GCode (for PLA) F3D (Fusion 360 source) Statistics: Build time: 0 hours 25 minutes Filament length: 1663.5 mm Plastic weight: 5.00 g (0.01 lb) Material cost: 0.15 € Thanks for checking this out. Feedback appreciated! Print Settings Printer: Ender-2 Rafts: Doesn't Matter Supports: No Resolution: 0.28 mm Infill: 20%