Homing procedure

[El Ventu]

Hello everyone!
I'm converting a small milling machine, I'm in search of the maximum precision possibile to make small plastic injection molds for my Precious Plastic workspace.

Since I'm running the workspace in my spare time, and the milling process can be very long, the machine have to be turned off in between the various procedures.

To achieve the maximum homing precision, I bought three Metrol microswitches (0.01mm repeatability), but they have the downside of having a very little travel, so it's needed to do the homing procedure at a very low speed.

My idea to speed up the procedure is this:
Installing three proximity sensors near the precision ones, to sense when the axis is near them, so the axis is moving fast until it opens the circuit of the proximity, and from that point it moves slowly to the precision one.

All the sensors are normally closed, so this procedure can be made using only two inputs on the AXBB-E I bought.

Is this procedure doable with UCCNC?

[Battwell]

no need.
you can set the homing back off speed very low to catch the same position every time.
my machines repeat at <0.005mm which should be "unseeable" (using proximity switches)
just make sure your machine can overun the switches without breaking them.