New build with recycled parts on a ridiculous budget 120cm*60cm work area

[Neale]

I use 2 motors for my X axis, and I bought EM806 drivers primarily because of the stall detect. The EM806 is a later version, effectively, of the AM882. That stall detect has saved my machine from potential damage on a number of occasions when I've got something wrong. Typically, I've hit the e-stop because of some silly setup or gcode issue, and as a result the gantry has gone out of square. Not a lot, but enough to cause one end or other to bind on rapid feed somewhere along the rails. I've wired the fault signals from the stepper drivers into the motion controller and the whole machine then stops before any damage is done by one motor continuing to drive. Resetting and rehoming is a small price to pay. I reckon that if you are going two-motors rather than one-motor-and-a-long-belt, stall detect is pretty much essential.

Have you worked out how you will home the gantry so it is square?