Homebrew PCBs

>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