3 axis CNC wood machine and 4 axis CNC router are both a kind of woodworking engraving machine. According to different processing requirements, it can be further divided into 3 axis, 4 axis and 5 axis CNC machines. Today, we will show you the difference between a 3 axis CNC wood machine and a 4 axis CNC router from many aspects, including its functions, differences in configuration, differences in application industries, and some considerations for choosing CNC wood router.