... machining:1. Rotary size: 20cm diameters, 130cm length (can process 70-80mm length round wood).Option : 20cm diameter , 90cm length/200cm length ... . 40cm diameter , 90cm length/200cm length.2. ... ,Y Axis High Precision Rack Gears, Z Axis Ball ScrewX,Y,Z Guide railLinear Square Rail from TaiwanControl ...