You have a line?G00G20G17G90G40G49G80 that turns off the tool length compensation in Mach 3. ?
Three lines later in your program you have?G00G43Z1.8000H2
which turns on the tool length compensation in Mach 3 for tool H2. ?Check the tool table comp values in Mach 3 and see if there is a value for tool number 2.
If you don¡¯t want tool length compensation at all you can edit the program and remove that G43 code and see what you get.
As another thought you may want to check your tool?definitions in Aspire. ?I use Vcarve Pro and have found a couple of instances where I have?inadvertently added a Z-value offset when setting up the job.?
On Nov 29, 2019, at 12:35 PM, Richard Wize <rickbw@...> wrote:
I thought it might be Aspire, but if I reset Z zero a 2nd time after changing the bit (after I've already done one Z zero and the program runs off by 1"), I then close the G Code and re load it and then the program runs fine,? therefore I'm thinking
it has something to do in Mach 3?
