Three Ways to Use Discarded Walnut Shells | eHowAlthough there are many ways to use walnut shells commercially, there are . To use, first crush the shells into as small of pieces as you can with a hammer.how to crush walnut shells,Does anyone crush their own walnut shells for their tumbler? - The .Just curious how to crush walnut shells to use in the tumbler. We eat lots of walnuts and I can't see tossing the shells if I can figure out how to.
how to crush walnut shells