Hello,

First of all I'm new to CNC so be gentle with me !!

I'm converting a small milling machine to CNC, and having trouble deciding what type of limit / home switches to use and where to locate them.

I'm going to use Mach 3 software, the 10amp stepper drivers from Routout CNC, and I want to cut steel on the mill.

I guess reed switches are not the best as the magnets will cause problems with steel swarf....or am I wrong here ?

There is also a possiblity I may cut some small wood parts on the mill so perpaps an optical system isn't too good either ?

I guess this leaves microswitces but which type to choose ? Normally closed normally open, button, lever, lever roller etc etc.... and also where is best to locate them....on the table and use flexible connections or fixed to the bed ?

Also if microswithes are the answer, where is best to buy them in the U.K ?

Any ideas much appreciated.

Cheers Nick.