This is a long post that explains why you cut height might not be exactly what you are setting in the CAM/post processing. Give it a read then move to my second post to determine how to check and how to correct the cut height.
I calibrated the cutting height for my Crossfire Pro this weekend and I thought other folks might be interested in what I found.
First off, I had never calibrated my cut height previously in any way. I never thought about it, I guess my excuse would be “doesn’t the initial height sensing and torch height control take care of all that?” I think the answer is two part:
the initial height sensing (IHS) does take care of that, but it makes an assumption about how much backlash there is, and that …
How to check and correct the actual cut height:
Run this gcode file from @Phillipw
cut height test.tap (224 Bytes)
It will go thru the IHS (initial height sensing) and then go to the cut height of 0.060 inches and stop. Measure and see if you are at 0.060 inches. The torch will never fire with this code as it never gets the command to fire.
Here is what the file is:
(v1.6-sc)
G90 G94
G17
G20 (Units: Inches)
H0
G92 Z0.
G38.2 Z-5.0 F100.0
G38.4 Z0.5 F20.0
G92 Z0.0
G0 Z0.02 (IHS Backlash)
G92 Z0.0
G0 Z0.15 (Pierce Height)
G4 P0…
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