Things which will cause inconsistent Z-height:
- changing the endmill w/o using the tool change prompts
- positioning the BitZero in a way which doesn’t match the sort of probing which one is doing
Please compare what you are doing to:
- Machine operating checklist
- Working With Homing - Carbide 3D
- Getting Started with Carbide Machines (if using a BitZero v2)
If you continue to have difficulties, document step-by-step what you are doing and send it in to support@carbide3d.com and we will do our best to work through this with you. For an example of this sort of thing see: