MikeC's bench in Contemporary Maker's Gallery Posted 33 minutes ago · Report reply Cowboy, I have a feeling this may be some rather dense maple. This weekend I'm going to measure the density using scraps left over from cutting out the back. Catnip that's a brilliant idea! I should have thought of multiplying by 0.4 in the spreadsheet. I'll do that tonight and see what it is in millimeters.