NordicCNC's build log

[NordicCnc]

Its not easy or practical to put a bottom limit switch on the Z axis as the tool lengths will all vary .

True but my intention of using one is not to protect the tool itself, but to protect the machine from crashing into the BF12 floating bearing for any unintended reason. On my current machine I've been completely fine without any limit switches, but that machine is made with weaker stepper motors and is only running 4000mm/min at maximum feed rate.

[Clive S]

True but my intention of using one is not to protect the tool itself, but to protect the machine from crashing into the BF12 floating bearing for any unintended reason. On my current machine I've been completely fine without any limit switches, but that machine is made with weaker stepper motors and is only running 4000mm/min at maximum feed rate.

Have you considered soft limits?

[NordicCnc]

Have you considered soft limits?

No I have not, but that should work perfectly with position feedback from the servos. Thanks for the tip!