I've never tried the magnets.  I drilled the holes and screwed in the
snaps. I wonder: With the magnets can you get the screen nice and taut
so that no squeetros can slip in through the cracks?  With the snaps
properly placed, I get a nice tight fit.

John Jensen, Mudbug Pottery
mudbug@toadhouse.com , http://www.toadhouse.com