Ready Steady Eddy

[EddyCurrent]

Okay, let's revisit the scenario, this is how I imagine it with 2 home switches on X

The gantry is moving back to the home position, one side hits it's home switch first so it stops and backs off slightly, now the gantry moves again until the other home switch is hit, the gantry stops and backs off slightly.
First off, is that correct ?, if not then let's have an explanation of what really happens.

Questions;

1. Do both X home switches have to set so they both activate together exactly when the gantry is at the physical 'square' position ?
2. If so, we are now relying on the repeatability of the switches for machine accuracy.
3. Imagine a cutting job has just been completed so that the gantry has been up and down loads of times and it's now out of square. When it comes back to the home position it will hit one home switch first, so then what happens ?