Homebrew PCBs

Hi all,

I am lucky enough to have gotten a few HP plotters.  these are the 
ones with the multi pen carosel.  I need to check each to see if they 
are all the same model.   The paper moves back and forth under the 
pen and the pen moves side to side.

Anyway, I am thinking of doing something with them.  one idea is to 
unload them on E-bay, another to see what steppers are used.

the last is to modify one for making PCBs.

the connectors are GPIB or some such odd type.

any suggestions ?

in reading the list there is the pen filled with resist idea and the 
coat the board and scratch off the coating idea.

has anyone modified one of these for drilling ?

Dave