In your message dated Sunday 16, July 1995 you wrote : > > Date: Sun, 16 Jul 1995 00:16:38 -0600 (MDT) > > > > > the thread size of my agraffe was not available in Helicoils. The > > >agraffee was 1/4" by 36. He believes that a good epoxy should do >the job. > > > > > > I do not believe that epoxy would be a good solution. My experience with > > helicoils has been that they work > > OK until the threaded member is later removed. > > > There is a reason that the tiny 36-thread/inch is used. A 36 thread/inch > > agraffe can be overtightened up to > > a 1/4 turn to achieve the correct alignment, while a 18 thread/inch agraffe > > would break off before yeilding to this amount of overtightening. > > > In 1998 I had to repair an Iback O/O with a broken agraph. the agraph was delibitry smashed off, the customer said probabley at the docks when she moved form South Africa. Well we had a problem the agreph was set in wood and the soronding wood was damaged, I thought of drilling out and putting a wooden dowel in and re drilling to the correct size and taping we tested this out first on the bench but of course the grain was running the wrong way and when tappet in to the wood it flaked (the wood was beach) so we decided on glue. The shaft of the Iback agraph was longer than eney I could get from a supply house the closes we found was an old Broadwood piano we used apoxie-resin glue after two days put the new strings on puled up above pitch left for a week to if it worked it did no movement. I still tune the piano and the agraph is OK. But I do not think this would of worked if it had been a grand as the presser is upward and side ways on a grand agraph, but on an upright it is down and side ways plus I was guleing metal to wood and not metal to metal. Barrie Heaton MABPT MIMIT England.
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