... .With rotary 4.OEM,CE,ISO9001 SD-1313Y column cnc router,3D cnc engraving machine for column/cylinder Scope of application1.stone crafts,relief ... guide,which runs smooth and has high precision.2.The machine is of steel structure which is strong and invariant,and ... usage.3. with powerful Water-cool spindle,the machine has a big cutting capacity and high efficiency.4.By changing the diameter ...