Homebrew PCBs

I uploaded the top copper layer and also the reverse image of the 
soldermask layer into my Files folder called Mike P's stuff. These 
pdf files might make more sense.

Here's the link.

http://groups.yahoo.com/group/Homebrew_PCBs/files/Mike%20P%27s%
20stuff/

Mike



--- In Homebrew_PCBs@yahoogroups.com, Henry Carl Ott <carlott@i...> 
wrote:
>
> 
> 
> >Since we can use toner transfer for adding a silkscreen layer 
over a
> >board, why not use toner transfer for adding a soldermask layer to
> >the board? It could be even done in your favorite board color by
> >using a color laser printer from a copy center. A negative image 
of
> >the soldermask layer would be required. My software generates that
> >if needed. The plastic toner soldermask layer would make an
> >excellent barrier.
> >
> >
> >Thoughts?
> >
> >Mike
> 
> My experience with this is that the temperature of the soldering 
iron will 
> melt away the toner, defeating the purpose of the solder mask.
>   I used to not even bother to remove the toner after etching, and 
just 
> solder the pins right through the toner. I stopped doing that 
because, 
> while it worked, it looked like crap.
> 
> -carl
>