Homebrew PCBs

Thanks to all responders!
I'll give the squeegee a try on the next batch.

As Leon kindly clarified, it is a liquid resist, supplied in an applicator similar to some shoe polish ones: a small tube with a sponge on the end. As you push on the sponge a small valve allows an amount of liquid resist into the sponge to be distributed on the board.

The challenge is to get the resist distributed on the board in a nice even way, without building up too much of a layer. The stuff has a tendency to form ridges and dry very quickly, leaving little time for it the settle to an even coat.

Alex
 
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