Milling with 3 bits

[MARIOBASZ]

I John, here I show you what I have done using 3 bits: 0.10 - 0.7 - 3.0 and here I have implemented:
I have run pcb gcode 3 times, changing the dimension of the tool to 0.10, 0.8 (0.7 + 0.1) and 3.0.

In BCNC I have enlarged the traces of 0.1 in +0.7.
Intersect between traces of 0.7. Then I made a difference with the traces of 0.10. To the result perform pocket operation with 0.10

Between 0.7 and 3.0 the algorithm would have to be repeated (I have done it manually)

Perform a pocket operation on the dimensions of the board for bit 3.0, subtract the traces of 3.0 so that they do not enter it

[JohnAtl]

Sorry I couldn't get to this.
I'm assuming this has been resolved. Feel free to open a new issue if not.

[MARIOBASZ]

Hi John
Not yet. I think this functionality would be useful in your pcb gcode.
I am finishing a plugin for bCNC that performs this operation (also useful for making posters, for example), it works on gcode blocks. I don't know programming, I'm very rough, but I'm close to finish it. It's a bit slow to deliver the tracks (35 seconds).
Regarding what you wrote about drilling with a diameter greater than that of the cutter, it is simple, and you can safely use G03 or G02 with R, in two semi-circles.
Scale-up for even larger diameters from a smaller diameter, can be with a discrete jump for each next diameter or an increasing spiral strategy.
Greetings Mario.