Optical or proximity would work, difficulty with either, on a mill as opposed to a router, is finding somewhere they can be kept clean and dry. Also where is 'home' on a mill? nominally its the centre of the table (as opposed to one corner on a router). Mach3 homing is to detect the homing switch change of state then back off til it changes back again. a bit tricky to do for the middle of the table.
Quote Originally Posted by manofgresley View Post
Hi

I have a 3 axis Milling machine which i have converted to CNC with the help from members of this forum, i have installed, a maximum travel Limit Switch (Mechanical Lever Type) to each axis, wired through the PILZ relay i am using, so complete shut down on activation. I now wish to install "HOMING" switches, but which type ? Mechanical or Optical. I am using Mach 3 software, or can this be done in Mach 3. Can anyone supply the relevant info?

Regards

Ray