When I set out to build the Classy Coaster Set from issue 207 (October 2011), I realized I didn't have a means to plane the coaster blanks to a common thickness. Using what I had handy in the shop, I fashioned a thicknessing jig using 8" ceramic tiles and my handheld belt sander.First, using double-faced tape, I mounted two tiles on a sheet of plywood with a space between them to fit the coaster blank. Then, I slipped shims under the coaster blank to reveal the exact amount of material I wanted to remove and sanded until the blank was even with the tops of the tiles. During use, the tiles are virtually unaffected by the belt sander. The coasters turned out great!—Bill Wells, Olympia, Wash.