Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:

> 
> No, it's something entirely different.
> The photoresist is for all intents and purposes just another 
laquer that  
> dries by evaporation of solvent.
> 
> UV curing ink is polimerization because of UV light, not 
evaporation of  
> solvent.
> You could just use any solvent laquer instead of photoresist, and 
spare  
> yourself the mess with exposure, IF you could print solvent laquer 
of this  
> consistency in a continous layer.
> 
> It is not UV curing ink.
> 
 
> ST

St,

Po-tay-to, po-tah-to. When the photresist is cured, it then becomes 
impervious to ecthants. The point is that the fluid is designed to 
wet out the copper substrate and adhere well.

Myc