Cutting issues need help

[Budman (Rand Budnick)]

My machine occasionally will make deep cut and ruining my project what do I need to do

[JimHatch]

Is the bit slipping? That can be caused by sawdust packing up inside the collet or by a bit whose shank isn’t true to dimensions. The first can cause the bit to slip down during a cut but the second would typically be a bad height from the start.

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey Rand,

possibly loose bit in collet, or loose Z Ball Screw Coupler

• Roughing bit increases depth ruining the work
• Z Axis Changes During Cut
• Home, zero, load, run then z hops to new zero

[rockytoptim]

I agree with @JimHatch & @Aiph5u. I’ve had my bit slip and cause a deeper cut. I take the collet out and blow it out with some air to clean it out.