Update. I went to the Linuxcnc form and explained the problem. The response I got was that they had this problem in the past and thought it had been corrected. They asked what version I had (V2.8). It looks like this is not a Freecad problem at all. I'm looking forward to their answer as I really en...

Glad to look into this and report my finding. One point I am not clear on. It appears to me that the issue may not be the large radius as Linuxcnc created the Large circle. What looks like went wrong was that Linuxcnc didn't recognize the very short change in endpoint value as different from the sta...

Have to add one more bit to this. I mistakenly said 10 and 15 thousandths. I checked it and it is actually 1 and 1.5 thousandths not 10 and 15.
This looks like it may be an issue with how linuxcnc reads the decimal places.

Thanks again

Thank you both for you insight. It appears that there are many small segments of curves. However looking at it more closely I can see that there are greater differences in the end point (where the arc ends) in all the successful codes. The two I noted as the problem only had an endpoint position dif...

Not sure if anyone is following this however I did find something very interesting. In linuxcnc I was able to visualize individual lines of code. I found two lines that when eliminated they removed the large circles (thousands of inches) and the rest of the code was fine. If you look at the code it ...

Further investigation shows that the code works fine in the freecad simulator and other online g code simulators. Could be there is a problem with linuxcnc interpreter. I will check that out as well. The problem only seems to show up when I try to run it. It show these two extremely large non-concen...

It seems to be finding a different origin. Not sure what is going on.

Thanks

This one has me stumped. I created a 6 inch model the same way and was able to create a machine path successfully. This one is about 18 inches square. Everything is fine until I get to the flag stripe image in the center. Somehow the "I" values are in the thousand of inches. If anyone can ...

I suspect you are correct. Essentially I am really not sure where it is coming from. I can't find a setting in Freecad to give it a value, usually .250 inches. There doesn't seem to be a straight forward setting for "tool length offset". Maybe it is intrinsic to something else I am not see...

Looks like posting "--no-tlo" in the post processor fixes it. Not to waste anyone's time but I am curious to know where this is being generated and where it is getting its values from. I can't find anything in the tool edit area?

Regardless, thanks again for your help