Al, Sounds like a good set-up...maybe a photo or two? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Al Guecia/AlliedPianoCraft" <AlliedPianoCraft at hotmail.com> To: ed440 at mindspring.com; pianotech at ptg.org Received: 7/30/2009 4:10:40 AM Subject: Re: [pianotech] regulating backchecks? >I installed 5 glide bolts upside down (similar to some Baldwin grands) on >the front of my bench (which is a Steinway B keybed) and use them to make >the adjustments. The way I set them up is to use action springs to hold the >action firm to the bench, then I raise and lower the front glides in the >bench by checking the center glides as you do when bedding the action, >making adjustment to the front glides bolts 'til you get it right. Then I >check the key dip to be sure it's correct. Works great. I don't need to make >many adjustments in the piano after that. >Al G >-------------------------------------------------- >From: "Ed Sutton" <ed440 at mindspring.com> >Sent: Wednesday, July 29, 2009 7:56 PM >To: <pianotech at ptg.org> >Subject: Re: [pianotech] regulating backchecks? >> If you're taking the action home: >> >> 1) Bed the action in the piano >> >> 2) In the piano, remove four front key wool punchings, at the ends and >> middle of keyboard, and replace with cardboard punchings to make >> unambiguous match to the dip block. >> >> 3) Put the action on your bench, mark the location with clamp blocks or >> tape, shim with index cards until the measured keys match the dip block >> again. >> >> 4) Tape the cards to the bench top. >> >> es >> ----- Original Message ----- >> From: "David Andersen" <david at davidandersenpianos.com> >> To: <pianotech at ptg.org> >> Sent: Wednesday, July 29, 2009 5:54 PM >> Subject: Re: [pianotech] regulating backchecks? >> >> >>> >>> On Jul 29, 2009, at 11:07 AM, jim ialeggio wrote: >>> >>>> What I really want is a reliable protocol to prove that the bench top >>>> keybed is precisely matching the piano's keybed. >>>> >>>> Any ideas out there? >>> >>> I'm continually surprised more technicians don't make use of the two >>> simple ways I've found to recreate exact key travel outside the piano: >>> >>> ---get real good at using a dip block (I use a hardwood 10mm) then >>> either >>> >>> 1. get an Edwards Action Trolley and recreate exact key travel by its >>> method...excellent and precise; or >>> >>> 2. when the action is in your lap, put a cheekblock face down on one >>> knee under the balance rail and oonch around, move that leg, until you >>> find the point where the key travel becomes exactly what it was in the >>> keybed. Doing it will show you what I mean, and either protocol will >>> create a sharp rise in your regulation precision and get you real, real >>> friendly with your dip block. >>> >>> David Andersen >>> >>> >>> >>> >> >>
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