Hi Richard, I have had some early 80's Baldwin verticals with this problem. #1 shrink bushings #2 remove old pins. (#19) #3 Fit a #21 pin in your pin vice, and heat with alcohol lamp. burnish hole with hot pin. #4 Repin with #21. Tightens up the bushing and pin for 4 swings very nicely Being cheap, I use 1/2 rubbing alcohol, and 1/2 water. One of the few things in life where a Canadian dollar goes a long way. If you have a plating problem, then ream out 2 full sizes to get rid of the crud in the bushing cloth. Don.M's fluted parallel reamers are ideal for this job. ( Availiable thro' Pianotech) Verdigris you are into replacing parts. Any other fix is temporary at best. Red stains on the pins is usually a clue that some one before you has tried unsuccessfully to size or lubricate the problem. Take a magnifying glass and inspect the pin carefully for fakes or pits. Please note, I do not go 2 full sizes as a general rule, but when dealing with plating or unstable bushing cloth it seems to yield the best results. Regards Roger At 09:07 PM 03/09/00 +0200, you wrote: >Say there Roger... I was wondering... this shrinking process thingy... I run >into a few pianos that have seemingly snug enough centers / bushings... but the >bushing cloth used is like really soft and bushy.. you can burnish the hell out >of this stuff without getting it "pressed to stay". Not wanting to have to >completely replace the set of flanges, or get into rebushing.. would it work to >"shrink" them, and then re pin ?? > >just a wandering...grin > >Roger Jolly wrote: > >> Hi Kristinn, >> If the centre's look clean, no verdigris, and you have a >> lot of sluggish centre's. >> Try sizing the bushing's with alcohol and water, leave 24hrs to dry >> naturally. It will save a lot of work and give consistent results. Drying >> with a hair drier tends to over shrink the bushings. >> Regrads Roger >> > >-- >Richard Brekne >RPT, N.P.T.F. >Bergen, Norway > Roger Jolly Saskatoon, Canada. 306-665-0213 Fax 652-0505
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