[sdiy] Non-chemical PCB production???

[Colin f]

> Over last weekend, a swoop on a local car boot sale resulted 
> in me now being
> the proud owner of an HP7475A pen plotter. You know this 
> puppy is sitting
> there and I'm wondering could this thing be converted into a 
> weapon of board
> construction?

If you're feeling flush, one of these might be more use -
http://www.milinst.com/robotics/robotics.htm#axis
250 quid is a lot less than any other 3 axis cnc milling machine I've
seen.
And you can get HPGL files out of PCB packages pretty easily.

Colin f