Plasma cutter tool offset

[cnc_freak]

Hello.
In a plasma cutter i try to use G42 in order to compensate the arc diameter. The problem is that when i try to cut rectangle/orthogonal pieces i get the message "Concave corner with cutter radius comp".Is there a way to workarount this issue, because i can't change the cutting part with radius on the corners.
Regards.

[TomKerekes]

No, there isn't a way to go around an "inside corner" with a round tool without gouging. You will need to add arcs to the corners.

[cnc_freak]

Its an "outside corner" i want to go around. Is there a way to define a square tool?

[TomKerekes]

Its an "outside corner"

Then you should not get that error. Maybe your entry move into radius compensation. See here.

Post the GCode and your Tool Table Settings for the Tool.

What Version are you running?

Is there a way to define a square tool?

No

[cnc_freak]

Here are two gcode files. Rename them to *.ngc and the default.txt is the tool file, rename it to *.tbl
I use 435d version.
Regards.

[TomKerekes]

I think it depends on where the tool is when you start the Job. You don't have a controlled entry move into radius compensation.

The GCode turns on radius compensation and moves to a starting point of X=672 Y=7 and moves upward.

If the tool begins on the Left of that point it is ok:

NoGouge.png (6.73 KiB) Viewed 1533 times

If on the Right there is a gouge

Gouge.png (6.34 KiB) Viewed 1533 times