I know you do not want to hear this, but there is nothing wrong or mysterious going on in your file.
Even though you feel you have thoroughly gone over your machine and there is no way there could be a problem it looks like there is a problem with something on your machine.
In your last post you wrote :
"the V bit is set to the top of the surface and the axis zeroed.
the file cuts deep and when the run is finished the Z axis display shows 000
if you use the MDI and say Z0, the vbit goes 0.200" into the material."
That should tell you something shouldn't it? If your display is saying the machine is at 000 and then you MDI in G0Z0 and the bit moves into the material .200 then something is wrong in your machine. BTW, that .200 is what you have set Z clearance to.
When the machine finishes the job how far is the bit from the work surface? According to your cnc code it should be .8 inches above the material. If it is not, then your machine has lost steps. If it is, and then you MDI in G0Z0 and it nosedives .200 into the material your control has lost its mind.
What type of machine are you running and which control software? Your cnc code looks like code for Mach 3.
The only thing I can see that might be causing you a problem is this line in the cnc code:
See that H1 at the end of the line? That is what is known as a tool length offset register. If you have entered a value into that register on your control either on purpose or by accident it WILL cause you problems. You need to check that out. I run Mach 3, I have gotten rid of quite a bit of the prep code because it is not needed, H1 is not needed. Vectric software programs the point of the tool and does not deal with tool length offset registers. So invoking H1 can cause a problem if any number other than 0 is in that register.
Edit: The G43 in that line is telling the control to apply the offset value stored in the H1 register.
Last edited by TReischl
on Thu Apr 04, 2019 1:11 am, edited 1 time in total.
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