Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Steve" <alienrelics@y...> 
wrote:
> Epson printheads are "solvent" but the solvent is alcohol. As
> discussed here and on the Epson printers list, one big problem with
> other solvents is they may attack other parts of the printhead like
> the plastic leading up to the piezo heads.

Steve,

I found out that Sharpie pens are alcohol-based, however, these pens 
are susceptable to drying out without the cap. Would the print sponge 
pad be enough of a "cap" to prevent this? 

Secondly, anyone here happen to know the compoistion of Staedtler Red 
Lumocolor Permanent Pens? I understand that they are dry-proof, but I 
wonder what is based of.