Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

>you'd want to put the paste on the copper fairly
>carefully rather than painting it all over the board.

This is not an issue. Just paint the whole board with a thin layer of
the stuff. The tiny beads of solder that form where there is no copper
will wash off easily with water. As with painting, several thin layers
are better than one thick layer.