Homebrew PCBs

I believe my HP plotter (HP DesignJet 500) uses UV cured inks.  I 
don't have the time right now to check on it though. I also know that 
it can print a fine line and a very heavy line.  I don't know either 
if the ink is water or oil based.  I have a hunch it is a water based 
ink of some sort.

Chris