David: This isn't contrarian. It's just the same procedure with the entire assembly together. The advantage of achieving positive contact with the keys off, then loading them on after, is to insure that the flex of the keybed with pedal use doesn't "unbed" the center even by the slightest. No-one has addressed shift-bedding (una corda). There can be very slight variations across the surface of the bed where the glide contacts it, and it is wise to check the una corda position bedding as well. Minor detail. P In a message dated 10/15/2010 7:58:51 P.M. Central Daylight Time, pianoboutique at comcast.net writes: Not to be a contrarian but I bed keyframes with everything together. The technique I use was presented by Steinway’s John Patton at one of the conventions. Can be done in a couple of minutes or less on a Steinway. Pianos that have glides that are buried underneath the keys require at least the removal of the covering keys naturally. The process is simple and requires you to just back off the glides enough to be sure that none are touching the keybed which you can test be pressing down on the glide bolt with a wrench (or a screw driver if it’s a screw type) using the back of your hand against the pinblock as leverage. You will be able to see the keys flex downward when there is a space there. When they all produce a bit of flex then start in the center and turn each bolt down until there is no flex, backing it off just slightly in order to produce that telltale knock and then just setting the bolt down to eliminate the knock/flex. Go alternately outward until all are bedded. Then go back to the center and make sure you haven’ t “unbedded” the center glides by turning the outer bolts down too far. If you have then start over. It requires a bit of touch and sensitivity but it can be done quickly and accurately with some practice. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101016/4b9f78d1/attachment.htm>
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