Homebrew PCBs

I did some tests using three types of resists; the results are in
Ted-KX4OM in Photos. I tried Future Floor Finish, spar varnish, and
PolyCrylic.  All three are good for protection after etching.

PolyCrylic was by far the most difficult to solder through.  Future is
very easy to solder through.  It is not so good as a resist.  Future
is pleasant to use; it smells really, really good when soldering :)
One bottle is cheap, and will last a lifetime, give or take a couple
of years.

The only downside to Future is that if any chemicals are still present
on the board after washing, it will turn into a green crackle finish
at the location of the chemicals.

Future is also good for applying decals, homemade, or otherwise.

Regards,
Ted 

--- In Homebrew_PCBs@yahoogroups.com, "Ben" <bhleavi@...> wrote:
>
> > > My  interest is in a coating that protect the copper from oxidation 
> with
> > > age. I  don't have a provlem soldering.<<
> > As an "aftercoat" you might try some of the spray "clearcoat" that 
> Walmart 
> > sells in the automotive section (assuming you are inthe US). It shold 
> be 
> > tougher than the clear Krylon.
> 
> 
> I use Clear Lacquer Spray, get it in the paint dept of whatever Home 
> Improvement Store you have in your area.  I also do positive resist and 
> leave the resist on, spray with clear lacquer after soldering.  See the 
> PCB on the home page of this group.
> 
> 
> Ben
>