Homebrew PCBs

Thanks for the answers...I thought it was something you could do at 
home but I guess not. What does one use to protect the copper when 
your finished with the board? Tinning?



--- In Homebrew_PCBs@yahoogroups.com, Adam Seychell 
<a_seychell@y...> wrote:
> Bob Weiss wrote:
> 
> > 
> > Does anyone know what they use on PCB's to give that green 
coating 
> > that they then apply silkscreening to? Can this be purchased? IF 
so 
> > where? What are the benefits to using this?
> > 
> > 
> 
> Google: "soldermask"
> 
> 
http://www.rockwellcollins.com/about/additionalproducts/collinsprinte
dcircuits/page1823.html
> 
> Normally applied as a film and exposed/developed much like etch 
resists 
> except this stuff never comes off. Older methods would silk screen 
> soldermasks, newer methods use Inkjet technology to print directly.