Happy to help if I can Daniel. First of all, it is likely that it will be difficult at best to set the letoff accurately on each note to within 1/16 or less of an inch. The letoff punchings on an older piano (I'm assuming this is a some-decades-old piano) are going to be deformed and you're just not going to be able to accurately and consistently taper letoff from 1/8 inch in the bass to 1/16 inch in the treble. To measure what letoff you have, the easiest thing to do is just do it with your strips and check it by eye. But if that isn't working for you, try the following: Get a substantial weight that you can set on a key to make it go down and through letoff. Then get a few pieces of wood or whatever that are maybe 1/16, 1/8, 3/16 and 1/4 inch thick. Hold the various thicknesses of wood on the string where the hammer strikes and let the weight depress the key. See at what distance the hammer blocks and at what distance the hammer/key goes through letoff. That should answer your question. Terry Farrell ----- Original Message ----- i'm working on this everett, you see, and i've filed the hammers maybe 1mm or so, and adjusted letoff, but the hammers now have a "blocking" feeling (blocking against the string if you know what i mean). i used the 1/8th 1/16th inch magnetic strips from Schaff or Pianotek as a good place to start for letoff and tried to graduate it from 1/8-1/16. i'm wondering if i've set letoff too close. it's on a teacher's piano, so i'm thinking kids who play lightly might notice it more, too. help? daniel carlton -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080514/88ccbbd9/attachment.html
This PTG archive page provided courtesy of Moy Piano Service, LLC