gEDA-user: How to do PCB Autorouting with non-plated holes

[Cory Papenfuss <papenfuss@xxxxxxxxxxxxxxxx>]

	Hey, all.  I've used PCB on an off for 10 years and recently have 
been getting familiar again with the rest of gEDA which has become a great 
set of tools!

	Anyway, I've been using a board mill to make 1 and 2-layer 
prototypes of typically through-hole components.  The trouble is when the 
autorouter chooses to use a component pin as a via to transition to the 
other layer.  If it's a part that doesn't have room to solder the topside 
(most parts... DIPs, ribbon-cable connectors, can-electrolytic caps, etc), 
it's very difficult to connect both sides.

	I typically check manually, but it's tedious and I often miss 
some.  Is there any way to set up the autorouter to ignore component-layer 
pads, but still route on the component layer elsewhere?  I've scoured the 
web for ideas but come up only with kludging a "no-autoroute-zone" by 
placing copper on the component layer before autorouting.

Thanks!
-Cory

*************************************************************************
* Cory Papenfuss, Ph.D. Electrical Engineering, PPSEL-IA                *
* Research Scientist, Vibrations and Acoustics Laboratory               *
* Mechanical Engineering                                                *
* Virginia Polytechnic Institute and State University                   *
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