<html> <body> Terry, Most factories use air drying tumblers (or something similar) to dry the parts faster.  They use mildly warm air for 1 or 2 hours, if I am remembering correctly. You could possibly put them in a cloth bag and tumble - dry them in your clothes drier with a low heat setting.  If possible, run them for an hour or two, take them out and put a sizing pin in, soak with 50/50 alcohol/water, dry them again the same time with the low heat, then let them sit over night to settle at the ambient conditions.  This should give you really stable, well fit centers. I have always used a toaster oven to warm them at 120 - 150 degrees or so for about 1/2 hour, then let them sit out as long as possible before burnishing and pinning.  You are correct that this could lead to big changes later, so for critical centers like hammer centers I have always tried to let them sit for at least a day before final pinning. Don Mannino RPT At 09:04 AM 8/3/2005, you wrote: <blockquote type=cite class=cite cite=""> How long does it take for a pre-glued Renner flange bushing with sizing pin to dry to the point where one can be sure that bushing size/pin fit will be stable?   Any knowledgeable opinions?   I'm trying to rush a piano teacher's damper lever repair job so she doesn't have to cancel lessons.   Anyone ever see that where the damper block (the thing the damper wire is secured in) bushings compress to the point were the center pin has a lot of play in the bushing? This is a 1950 or so Baldwin L grand.   Thanks.   Terry Farrell</blockquote></body> </html>