if your homing swithes move all you axis (axii?) back to 0,0,0 ...then that means you can't have your tool go past those points (I'm quick eh?!)

But when designing in CAD/CAM, often 0,0 is used as my extremeties in the X & Y axis...but if so, then obviously it would be impossible to cut anything along those lines (eg my cutter is 3mm in diamter so would need to be X (or Y) -3mm to cut a line along X0 or Y0.

So what do people do here in practise?

1. Make sure their CAD/CAM output never gets any closer to X0, Y0 than the width of their cutter (seems clumsy!) (ie offset in CAD/CAM?)

2. Some offset in the CNC software? (eg Mach3?)

3. Start making designs well away from the 0,0 reference?

4 None of the above?

I ask, because I'm just about to fit some homing switches to my Frankenstein CNC creation...but then while pondering I relaised that I'd hit this particular problem (as I tend to have my design extremeties touching X0 & Y0...just for simplicity)