At 07:47 AM 03/16/2001 -0500, you wrote: <snip> >I haven't felt the need to heat cauls but I do set some weights on the >cauls (not a lot) and leave them in over night, as Ron said. Next to no >easing BUT you need to pick your cloth so the caul fits snug in the hole >during gluing. How snug? Snug enough that you have to push it in but not >so snug as to split a sharp mortise. > >Those mortises were cut in the key factory. It would be wonderful to get >some of these piece so we could unbush keys more quickly, accurately and >size the holes perfectly, all with one plunge. Anybody?!?!?!? > > Newton I made a caul press for front rail bushings wnich makes clean corners on the felt. (image files available). Bill Spurlock makes mortise sizing cauls to insert after the old felt has been steamed out. Regards, Jon Page, piano technician Harwich Port, Cape Cod, Mass. mailto:jonpage@mediaone.net ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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