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And the laser cut plywood? I really want one of those machines.
I wish my school could afford one, though it would probably just end up like the CNC...rarely used and never used to its potential.http://www.epiloglaser.com/zing_series.htm
About as cheap as you can buy - Around £2000 I believe -We find that cutting plywood depends a lot on the glue they have used. Some cuts fine but some is almost un-cuttable.
Contacting your local school may bring some hope as many have lasers and may cooperate if your project will be interesting to the kids.
The laser cannot remove the copper, but there is a web site where someone first applied black paint and used the laser to remove the paint to create a resist mask.I wonder if it could do PCBs, expensive compared to basic etching though...