Homebrew PCBs

What you are looking for is called a "mordant". It is
used on cotton fabric to help the dye molecule adhere
to the fiber.

Think of it also as a "primer"

The problem is to find one that reacts on the ink, but
doesn't block the etchant.

I tried a light coating of hair spray before printing.
I can tell you from expeerience, cured hair spray is
an excellent resist!  ;)

Myc


--- Steve <alienrelics@...> wrote:

> --- In Homebrew_PCBs@yahoogroups.com, William Carr
> <Jkirk3279@...> wrote:
> 
> > I don't know if it's a practical suggestion, but
> there are compounds  
> > now used for emergency bandages.
> > 
> > You slap one of these on a fast-bleeding wound,
> and the chemical  
> > additive absorbs the blood instantly, giving off
> some heat.
> > 
> > This causes the wound to clot immediately.
> 
> I doubt it. I suspect that what you are talking
> about is a clotting
> agent, not a drying agent.
> 
> Steve Greenfield
> 
> 
> 
> 


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