Benny, most professional CNC routers that I am familiar with are setup offline. Meaning you put your tool into a preset toolholder, measure the length and enter the dimensions into a list on the control. Normally, you don't have to setup on the table.
Others use a system like is explained here, but they have a subprogram which activates during a toolchange, the bit moves over to an out of the way place on the router bed, sets the height by the sensor and the coordinates are entered in the tool list automatically.
Trent |