Z axis is plunging into work piece after using bitzero v.2

Please see:

If that doesn’t help, please post a .c2d file, the generated G-Code, step-by-step notes on how you are securing your stock and setting zero relative to it and managing all tool changes and a photo showing an attempt at cutting still in place on the machine and we will do our best to work through this w/ you. If you don’t wish to share the file, send it in to support@carbide3d.com