How to build A CNC machine _ DIY CNC mill

This is full video on how to build CNC machine at home. This CNC mill is very rigid it has very high accuracy. It has zero backlash. Here are some info on build. Build time: About 500 hours. Build cost: About $4500 Travels: Z : 11“ ( 27.9 cm ) X: 22“ ( cm) Y: 12“ () Spindle: 5.5 KW ATC BT30 18000RPM from Ebay. ( very happy with it) seller is super nice guy. Electronics: BOB: PMDX 424. Spindle speed control: PMDX 407. Stepper motors : Nema 34 1275oz-in Drivers: DM860d from Ebay Software: Mach4. Rails: 20 mm Raills for X,Y and Z Ball screws: Y ball screw is 20mm X Z ball screws are 16mm Couplings: Bellows style Ruland coupling with zero backlash . Frame: Y Axis 24“ x 14“ X