> So what you only really need is the copper board

When there was a board house up the road I could get free
useable offcuts (A5 or better) of fibreglass and phenolic. Now
they've gone I pay about 16c / sq in for FR4, retail. Much less
if on a/c and I get the tax back. Compared with the hours spent
on the micro and cost for other components, it's a minor part of
the budget. I couldn't count the number of sq in I've etched with
the 5kg (NZ$40 IIRC) of FeCl I bought years ago. It's a lot

Joe
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