Re: gEDA-user: PCB gcode generation

[John Griessen <john@xxxxxxxxxxxxxx>]

On 04/26/2011 02:26 PM, Mikey Sklar wrote:
> Is there a way to break up the drill file so that I can switch bits?
I'm getting by with using one bit for all vias, but it is not
> ideal.

I've not used the Gcode export yet, but this sounds like something you can postprocess.
grep or sed on the drill file should get you the separation you want...

Nope.  I ran export and it gives 387 G81 lines where I get a fab drawing
with three different sizes totalling 387 holes on one of mine...

> - I'm struggling with cut lines. Specifically, cutting out the mounting holes and the circuit board edges. It would great if there
> was a way to select specific traces or vias for different mill-depths. Even better if I could control the order in which the cuts
> are made so I don't have a circuit board that has been cut free from it's clamping before the mount holes were cut.

When I export Gcodes, I get a file, tek_7k_flex.gcode.outline.cnc that seems to be
only about the outline, I get a sequence of 389 polygons that start and stop near eachother.
Nothing is mentioned about the cutter size, but I guess they overlap so as to cut out the outline
along the centerline of the outline trace.  (My outline was defined by a layer called outline
holding just a 10 mil wide trace, the center of which was the desired board edge.)

tek_7k_flex.gcode.front.cnc contained 465 polygons, so it was different...


John Griessen
--
Ecosensory   Austin TX


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