The thickness of the pinblock is increased. Not necessarily by the full amount--the plate can also be raised by installing shims under each end of the block. I make the pinblock uniformly thick across its width so the plate height is also uniform across the width of the piano. And if I shim I install the same thickness shim under both the treble end and the bass end of the block. The string height is raised--at least in the treble. I can't tell you if the string height will be raised in the low tenor or bass. A little, probably, but how much depends on how the original plate was set. They often have quite a slant to them. No, you are not adding 5 mm all along the treble bridge. I generally do not raise the tail of the plate much, if at all. By mid-tenor you will probably not be adding much at all to the original height. Occasionally you'll be taking some height off. Remember that the original downbearing settings in these pianos were quite variable depending on the climate conditions at the time the piano was assembled. ddf | -----Original Message----- | From: pianotech-bounces at ptg.org | [mailto:pianotech-bounces at ptg.org] On Behalf Of Will Truitt | Sent: March 24, 2009 4:10 PM | To: pianotech at ptg.org | Subject: Re: [pianotech] Increasing bridge height | | Hi Del: | | Thank you for your further comments. I would like to ask you | the same question I earlier posted to Ron Nossaman: If you | added say 5 mm. to the top treble to get it up to 30 mm total | height, would you be adding that same | 5 mm all along the treble bridge? Would you increase the | thickness of the pinblock by the same amount and therefore | raise the string height an equivalent amount? | | Will
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