Z axis not homing


My Z-axis started not homing,
I’ve had the x not home before so I cleaned everything with an air gun and vacuum on the lead screw of the Z, but the problem remains.

Any ideas on where to start addressing this?

I’ve been milling some soft steel, perhaps there’s a chip somewhere.

Thank you

Please contact me at service@pocketnc.com and we will address your issue with the Z axis not homing. Let me know your machine’s serial number.