stone cnc router stone cnc router is a special machine for working on stone , solid material . Suitable material : stone , granite , marble , tile , manmade stone , glass , copper , aluminum , steel , brass and solid material Function : engraving , cutting , 3D engraving , relief engraving , embossment engraving , letter engraving , craft decoration , inner / outter decoration ect . Working area : now the model we have : SD--9015 , working area : 900x1500 mm SD--1015 , working area : 1000x1500 mm SD--1318 , working area : 1300x1800 mm SD--1325 , working area : 1300x2500 mm about other working area , according to your need , we can manufacture . Spindle : 3KW / 5.5 KW constant - power spindle (0-18000rpm)