Quote Originally Posted by malgazz View Post
I do not have an automatic tool changer and therefore have to zero the z each time a different bit is used. Zero-ing the z to the spoilboard each time. This effectively changes the amount of travel the z can make. The longer the bit the shorter the travel distance etc. I have approx. 150 mm of travel on the Z.
Yes exactly. So how are you using a Z- limit switch to stop you from diving in to the spoil board?