---------------------- multipart/alternative attachment In a message dated 5/25/02 5:18:17 PM !!!First Boot!!!, collin.s@skynet.be=20 writes: > Hello Wim. > =20 > Can you tell more about the entire pin block epoxying procedure ? (I am=20 > interested by that). > =20 > Regards, > =20 > St=E9phane Collin > (Bruxelles, Belgium) > =20 >=20 I did this on a 110 year old Weber grand with a mortised pin block, and it=20 worked quite well. I shored up the bottom of the pin block, and pored a smal= l=20 amount of impact resin in each hole and then drove in a 2/0 pin in each hole= .=20 (in some cases, I was able to just push the pin in with my fingers, because=20 the holes had gotten so big). I used impact resin back them because that was= =20 what I was familiar with. There are now new epoxies that will do the same=20 thing. You want a slow curing mixture, because it takes time to put in the=20 pins. Impact resin gives you about 10 minutes to work with. So obviously, I=20 only did a small section at a time. In this case, the pin block also was=20 delaminated, so in addition to filling the cracks, the resin also filled the= =20 gaps between the lamination. To tighten the gaps, I clamped the block with C= =20 claps in about four or five places.=20 I let this sit for about 3 days. I removed the 2/0 pins, and then strung the= =20 piano with 3/0 pins. Some of the resin will come out on top of the block. So= =20 when yo're all done, you can chisel off some of the excess, but it will=20 deface the top of the block. If you have an open face block, you probably=20 would want to put a nice piece of veneer on the top of the block. All you=20 need to do is dimple the holes. A tuning pin will drive right through the=20 veneer.=20 I did this about 12 years ago, and the piano is doing fine. There will be a=20 little different feeling to the pins. They don't turn like they do in wood,=20 but that is a problem only the tuner has to deal with. There is enough torqu= e=20 to hold the string.=20 Hope this is enough information. If you need more, just ask.=20 Wim=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/27/3c/12/75/attachment.htm ---------------------- multipart/alternative attachment--
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