- Hi Fellow Marblers
I've alumed both by dipping and sponging and recently took a workshop in
which we used foam brushes on wooden handles (the ones sold as disposable
paint brushes). Wow, what a difference...you get just the right amount of
alum on the foam brush, a few swipes across the paper (be sure and cover all
areas) and you're done. Fingers don't even have to get wet!
Be sure and rinse the brushes out well after using as the alum eats up the