If possible I'll use thicker balance pins, and if not glue size some or installing wood washers (2cm diameter, 5 mm thickness)with a tool sold in Germany (Jahn) look like the Onesti tool, but use the machining cylindrical hole below the balance hole (if exist) to center the washer's place. One of the tricks to stay aligned is to assess correctly the balance pin angle, it is rarely 90° to the keys, because the balance rail is usually drilled at the same time than the keys, at this moment the key plank may be positioned differently from square depending of the keyboard. With a thin key bottom isn't a big problem, but with a thicker one the slight angle if not respected when drilling the washer's place, is enough to get you off line at the front. It usually align well enough, if the key is fixed in a vice, but the vice itself is not fixed on the drill table so the tool follows its path better. I use a special tool to thin the inside part of the wood washer if the wood is too thick in the end. Hope it is understandable enough ! Isaac OLEG -----Message d'origine----- De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la part de David M. Porritt Envoyé : vendredi 11 juin 2004 14:11 À : davidlovepianos@earthlink.net; pianotech@ptg.org Objet : RE: Pulley Keys I am half way through doing this on an "M" here at SMU. I glue sized first in the traditional way and that helped at least half of the keys. However, there are still pully keys so I'm doing the slot, veneer thing. It's not my favorite kind of job, but it has to be done. I have already made a note in the piano's data record that next time the piano is rebuilt it will need new keys! dave __________________________________________ David M. Porritt, RPT Meadows School of the Arts Southern Methodist University Dallas, TX 75275 ----- Original message ----------------------------------------> From: David Love <davidlovepianos@earthlink.net> To: Pianotech <pianotech@ptg.org> Received: Thu, 10 Jun 2004 17:33:18 -0700 Subject: Pulley Keys >Anybody want to share favorite methods for fixing pulley keys? >David Love >davidlovepianos@earthlink.net >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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