Belted lead screw drive for z axis

thingiverse

BUILD NOTES AND BILL OF MATERIALS: My printer is a 12-inch build area Voron CoreXY machine. I used 450mm 2020 extrusions for the frame, so if you're adding this Z drive, remember to choose the belt length that fits your own frame area. You'll also need to figure out the lead screw length suitable for your application (400mm lead screws worked well for me). You will require: 4 KFL08 8mm Flange Pillow Block Bearings 2 GT2 Driver Belts in Closed Loop Rubber, Length 976mm, Width 6mm, 488 Teeth (size the belt to fit your printer's size; it must be closed loop) 2 GT2 Double Head Timing Belt Pulleys - 20 Teeth - 8mm Bore 1 GT2 Double Head Timing Belt Pulley - 20 Teeth - 5mm Bore Feet to increase height under extrusions so pulley and motor housings can hang down; mine are located here: http://www.thingiverse.com/thing:2068704