Top Z Prusa i3 R2

Summary I used bearing 626-ZZ 6x19x6mm For threaded rod M6 For "Prusa i3 R2" by Nicholas P. The bracket fits perfectly into the support holding the bar smooth 8mm. And 'possible to clamp the workpiece against the smooth bar with 2 grub screws 3mm. Print Settings Printer Brand: RepRap Printer: Prusa i3 R2 Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 180 micron Infill: 40 - 60 %