JD, I always save the sanding dust from my sanding machines. Very fine. I add that to a good epoxy. It will fill holes and machines very well. Al G Allied PianoCraft PO Box 1549 High Point, NC 27261 (336) 454-2000 PianoTech at alliedpianocraft.com www.alliedpianocraft.com ----- Original Message ----- From: "John Delacour" <JD at Pianomaker.co.uk> To: "Pianotech List" <pianotech at ptg.org> Sent: Tuesday, January 29, 2008 1:10 PM Subject: Plugging and redrilling an action rail > > I'm preparing in my mind a job that needs to be done and which I > haven't done before. > > The problem is with an otherwise quite nice overstrung by Wilhelm > Spaethe of Gera that will sound good and look good and is therefore > worth restoring and will fetch a good price. > > How the mistake was originally made I can't imagine, but the position > of the hammer flange screw on the first plain steel note is about > 10mm to the left of where is should be and the error reduces > gradually until about note 55, when things are just about right. > > The original finisher got over this difficulty by first sticking the > shanks in the butts at a considerable angle and then twisting the > hammer-head to negate the remaining error. I have bored out the > butts and got a good set of Wurzen AA hammers from Abel, and shanks, > and they will sound very good. I now have the option of either > getting a new rail bored correctly from Renner, but almost certainly > with the wrong flange profile and all sorts of other problems, or > plugging and redrilling the existing rail where it is unacceptable. > As to the keys, I'll work out that problem before diving in. > > There will be no problem redrilling at the tenor end because the new > holes will not interfere with the old ones, but for 15 or 20 notes -- > say 50 holes -- I shall need to be drilling close to or overlapping > the old plugged hole. I've thought of leather and epoxy for plugging > the holes, but I'd be interested to hear other ideas from people who > have done the job before. Is there some magic plugging solution that > will produce a durable result and be as good as it should have been > when new? > > JD > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080129/113db22a/attachment.html
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