This video shows our cnc wood router with double air cooling spinde for engraving the same pattern on the wood. 

Dual spindles CNC router STM1325-2 with two spindles is customized for changing the tools within 2-4 pieces. It's not only economic, but also can realize auto tool change, save the time of manual tool change and improve the working speed and precision. And it can engrave two work pieces at the same to reach the same effect. What's more, this Machine could mirror-sculpture (same engraving path, but in opposite directions) by changing the cables, which is widely used for wood door carving.