G41-G42 cuestions !!!

Why Linuxcnc can not generate compensated trajectories G41-G42 without having to add tangent displacements so as not to lose sectors of the trajectory at the entrance ?

Because it has strict rules to avoid gouges on the inside corner between linear moves. So, you need to program the lead-in point so it makes an outside corner on the first move after beginning the compensated path. (Yes, this can cause a DIFFERENT kind of gouge, so the lead-in point needs to be about one tool radius away from a line extended out from the surface as it will be cut.

This is described in the docs:
linuxcnc.org/docs/2.6/html/gcode/tool_compensation.html
Look at section 3.

It DID take me a while to learn how to do this reliably.

Jon

Why Linuxcnc can not calculate an entry point correct ?
Why the programmer has to solve it ?
It is planned in the future to give this capability to Linuxcnc ?

Thank you very much for your reply!!!

linuxcnc.org/docs/2.6/html/gcode/tool_compensation.html

I have read it many times and I can never understand why the developers took this concept as correct.

linuxcnc is very good, I use it to adjust 2 pieces, and it is very hard for how g41 and g42 work. It should be simpler

fanuc, fagor, siemens, heidenhan , work more easy.

thank!!!