... movement.4,Driving system use high precision rack and pinion,increase speed and precision5,Adopts Taiwan PMI linear guideway ,to ... ,Then rotary axis adopts machine tool chuck (positive and negative claw),and rail end thimble, whose movement use PMI linear ... metals,copper,aluminum,Stainless steel engraving and cutting Rotary carving can be applied in cube and cylinder engraving,such as hardwood,marble ...