FreeCAD Gcode not working in Linuxcnc

I constructed a gnome  door for the kids in FreeCAD and as I put it on my mill, Linuxcnc only showed huge circles instead of the door.
I inspected the gcode and found large I and J Parameters, which LCNC probably interprets wrong. If I delete code from line 150 onward and keep the last thee lines the code behaves as expected.
This occurs on my real machine as also on simulation.
Any ideas?

I don't see G64 setting - that can make corners _very_ rounded.

Thank you for answering, I'll check that.
Opening the code in ncviewer.com/ shows the correct lines,
just Linuxcnc shows great circles.
This happens on a test RPI running LCNC as well as on my mill as well as on a simulation under Linuxcnc.
I wonder if I am the only one experiencing such strange behaviour, the drawing just consists of straight lines...
Changing Gcode G90 to G91 shows me at least the drawing inbetween huge circles in LCNC.
If I move the corner points in FreeCAD sometimes the circles disappear (probably when the i and j Parameters get small) but I can not detect any systematical sheme in that...

Hi,

At my place the gcode looks like :
user-images.githubusercontent.com/448801...3f0-4f5c9bea11d2.mp4

Is this looking ok for you?

It seems that it may be doing something funky with huge I & J parameters.

Changing the G2/G3 lines with the huge I & J parameters to a G1 move appears ok.
 


 

It may be the wrong arc center mode.

G90.1 ( abs arc centers)
or
G91.1 ( incremental arc centers)

Thank you for your engagement. That is exactly what I drew in Freecad, lcnc draws huge circles.
I just wonder why the postprocessor from freecad for Lcnc don't match.

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Yes, It does seem that LinuxCNC is interpreting it incorrectly.

If you zoom in a long way where the circles intersect on the left side then you can see the rest of the plot.

It may be best to raise a new issue on Github.
github.com/LinuxCNC/linuxcnc/issues

I opened an issue on Github, thank you for the link.
@ phillc54: just curious; how did you edit that file to change the lines with the big numbers,
did you do all by hand or did you write a macro in vim or did you use Excel or libreoffice?

By hand, it is easy to find the required line by selecting it in the preview.