Machine goes wild in z direction

I know I have had issues in the past with this but I don’t think I ever saw a diffinitive answer. I ran a test piece on my longmill using the latest gSender and it cut fine. I put my production piece in an left x any alone but rezeroed z. When I started it up instead of cutting .02 deep it was going more than .25 deep. It happened on another run too. Any solutions?

@Wascally I’ve moved your question from the Bug category. I’m not sure that this is even a gSender issue, but with more information, I may be better able to determine that.

  1. Was the production material the same thickness as the test material?
  2. How did you reset the Z0 - on the surface of the material or the surface of your spoilboard?

The test piece was 3/4” and the prod piece was 9/16”. I put the piece in the machine in the same x-y position as the test piece. I then manually moved the bit to the zero x and zero y position and brought the bit down to the surface and hit the zero z button. I did it without the touch plate. So at this point it is using the original x and y zero and I have a new zero for z.. Since the stock was thinner than the test piece if it kept the original z it would not have touch the new surface.

@Wascally Post your gcode

Sorry this took so long to get back to the forum. Here is my gcode. It did not change between the test piece and the prod run.

D Nichter bottom side of lid.gcode (71.2 KB)

3 posts were merged into an existing topic: Surfacing Tool wouldn’t accept alteration of project dimensions