Homebrew PCBs

The way it used to be done (at least 10 years ago, that's as current as 
I can give you :-)  ) is it's printed in black in some 'normal' manner, 
then it gets a clear plastic powder that melts at temperature.  The page 
is flashed with some energy that is absorbed by the ink, which heats up 
and melts the plastic powder, and the rest of the powder is (hopefully) 
recycled.
Richard

>I would be interested in knowing how print shops do raised letter 
>business cards that mimic true engraved raised letter printing. 
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