I've tried several things: carpet, 3/8" plywood decking over 1"x 2" supports either plain or covered with carpet, a section of wooden fence reinforced with 1' x 2" supports covered with carpet, and finally a sheet of 3/4" plywood decking. I like the decking the best. It gives enough to protect my knees but is not so high or limber that it impairs hand sawing or planing. I had trouble keeping the carpet clean but it does pretty well other than that. I think the best mats I have seen are the ones used by restaurants in the dishwashing area. Dale Probst Registered Piano Technician Ward & Probst, Inc. Piano & Organ Service
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