Re: gEDA-user: Galaksija motherboard

[Tomaz Solc <tomaz.solc@xxxxxxxxxx>]

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Hi

> I can see where the mill created trenches next to the PCB tracks.  But
> how did you clear copper from large areas?  Also using the mill?

Yes. That CircuitCAM software has a feature called "rubout" that will 
completely remove copper where it's not needed. It's a very time 
consuming process but people in the lab told me that otherwise it would 
be very hard to solder components on both sides without shorting 
something (there's no solder mask).

I guess this is one of the reasons why it took them two weeks to 
manufacture this board.

> If so, why does it look like the clear areas are a diffferent height 
> than
> the trenches next to the copper tracks?

The rubout is done using a wider router (2mm I think). I guess that 
this wider router was positioned a bit higher than the router used for 
contours (I think the mill they used doesn't have Z-axis positioning).

Best regards
Tomaz
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