G540, homing switches and mach3

[Neale]

Hmm I think I worded it wrongly. I would like my top left corner to be my 0,0 and bottom right to be +1000,+750 like a sheet of print, I have used coreldraw like this for so long my tired old brain struggles with anything else. are you saying this cant be done? or that home wouldn`t be at machine 0,0?

You certainly can set up Mach3 to do that - it's just a matter of setting the "direction" flags appropriately in Mach3. However, if you think that you might addle your brain to do it the "conventional" way, then you are going to get double-addled with spots on if you then want to use any CAM software. Everything - and that means everything - assumes a right-handed coordinate system. What you are trying to do is set up a left-handed coord system, and you are going to be out of step with the rest of the world. Forget any CAM software, unless you want to draw everything as a mirror of the desired object so that it comes out right on the machine. It's really worth doing the same way as everyone else, and accept that there will be a short learning curve to climb. Definitely the lesser of two evils...