That's a good idea, which I haven't tried...a sizing application... David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Jon Page" <jonpage at comcast.net> To: pianotech at ptg.org Received: 11/27/2008 4:57:25 AM Subject: Re: [pianotech] PVC-E and keytops >I use PVC-E glue for keytops as many techs do. Maybe your first set failed >because the glue wicked into the porous keystick and the joint was starved. >After planing to develop a clean surface and attend to reestablishing >overall keystick height (to maintain a relation with the sharp) apply >a sizing coat of glue to the key. This will keep the glue from wicking away >and maintain a bond. >Clamping is usually not needed after a firm mating. If you are using tops >with the fronts attached and they don't mate well at the front then clamping >is needed. A rubber band will suffice for the front with a slat and >spring clamp >for the top. >If there is an extended shoe on the bottom of the key, the elastic can be >placed around the back of it and stretched to the front. Otherwise, place >the elastic around the key (top to bottom) at the back of the button; cross >the bands under the key and stretch to the front. Certain applications >may require the additional use of a push pin somewhere strategically placed. >You want the pulling force to approach the front from the bottom in an effort >to draw the plastic unit downwards. Apply slat and clamp the top. >-- >Regards, >Jon Page
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