Hey there Terry I have yet to see a piano with tuning pin bushings that really sit tight. Some better then others for sure... but seems like sooner or later they will move. And one way or another... I think any wood bushing will end up more like the squishy/deformation type then an open faced pinblock. I tried once expoxing in bushings before drilling the pinblock. Used enough expoxy to get the things cemented to both the plate and the pinblock... They made kinda nice drill guides :).... but 10 years or so later I noticed that some of them would turn with the tuning pin when changing strings. I'd rather see manufacturers just use an open faced setup to begin with. RicB Farrell wrote: > Or what about trying to duplicate Yamaha's approach to tuning pin bushings? Even if it required sizing the plate holes to mate optimally with a dowel or plug. Roger Jolly explained the Yamaha method to me one time, and I'm sure he did it well, but I still don't quite understand exactly what they do that seems to result in the bushing being part of the pinblock and/or plate. What about cutting plugs of Delignit, getting a real tight fit in the plate hole, maybe even a drop of epoxy on the base of the plug to bond to the block, and drilling the whole shabang in the piano in an effort to get a system that is more like an open-faced pinblock that your standard squishy/deformation-type tuning pin bushing? > > Or is this just one more inefficient overkill idea? > > Terry Farrell > > - -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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