Dear Jerry, There are lots of suppliers for extra dense felt. Renner USA -(203)221-7500 Renner also has leather available for key bushing #1050 bushing cloth 1.0mm thick (a) 1cm x 25Cm (b) 25 x 25cm (c) 1 M2 #1051 " " 1.2mm thick " " " #1052 " " 1.35mm thick " " " American Paino Supply Co. #33890A Thin #33890B Medium #33890C Thick Schaff Piano Supply Co. #314ED "extra density" key bushing cloth, stripped or bulk They also have .056 and .065 thicknesses Pianotek has several thicknesses, I just don't have catolog #'s. Also, FYI, Pianotek carries keybutton stock that is *very nice* and comes with balance rail holes in .146 and .163 sizes. These buttons are longer than most of the replacement buttons that I've seen and can be adapted to match existing buttons or look very nice as a complete new set. I hope this helps you! Sincerely, Laura Kunsky. RPT
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