Rotary axis Display

I have added rotary axis (workpiece rotates) to my 5-axis machine (BC head). I created separate config, as I want to run it as an "ordinary 3-axis" machine with 4th axis. So, configuration is changed in the way that all axis are homing but then after I use only XYZ and rotary B (as it is parallel to Y).
Machine works OK, only thing that is causing me problem now is preview of toolpath as it is not wrapped around Y.

Here is how it is programmed:
https://i.ibb.co/RYt6Vfc/ROTAR-CAM.jpg"

And how it is displayed:
https://i.ibb.co/hDnfNkF/ROTARY-DISPLAY.jpg"

Sections from my ini:  

Don't know what Version you are running but the toolpath preview does not 'wrap' around by default. There is a somewhat experimental setting for the [DISPLAY] GEOMETRY, so maybe try There are some caveats to this, see point 11 below:

 

linuxcnc.org/docs/html/config/ini-config...#sub:ini:sec:display

Version 2.9.3

DISPLAY = ! BXYZ
did the thrick
 

but after applying G54 on X, it becomes a mess:
 

From the pictures it seems your CAM is outputting strange positions as everything is out of machine limits, it uses center coordinates as it seems.
Probably should check that first.

I hope this video will make more clear what is happening, I have no issue with g-code from CAM, machined parts are ok, only display section is a bit off in my case:

but after applying G54 on X, it becomes a mess:

This issue is a known limitation of the feature. Please read paragraph 11 the documentation I posted above.

You can try to make a preview window with QtVismach. In Vismach the rotation axis displays well. I quickly made a window that is overlaid on qtdragon , as in the screenshot. You would have to work on displaying the gcode preview, but it would probably be useful.

Could you share your QtVismach file?

Try it out.This should draw the tool, detect your machine's workspace, and correctly map the A-axis rotation.Copy the entire directory to "/usr/share/qtvcp/panels" and run "qtvcp machine-test"