>Hi, I am ready to try a pin block replacement on a ~1930's Haddorf (Krakauer) 48" upright. The existing pinblock has three different pin lengths- 2.25", 2.5" & 3". 2/0 & 4/0 diameters as well as some metal pin bushings. The block is 3/4" 3 ply maple plywood overlaying a solid piece of 2" thick maple. I can pull some of the pins out with my fingers! The plan: rout the existing block to receive a new laminated maple pin block. Schaff lists three different thicknesses- 1.25, 1.375, and 1.5 inches. What thickness would be best? I was given this piano. I am using it for practice repairs. The bass bridge needs recapping as the pins there also come out by hand. It is a solid piece of maple complete with many cracks. Soundboard has no cracks, but could use refinishing. I'll restring it and then work on the action. I hope to be ready for the vertical regulation and repair section the the RPT exam when I finish this <G>! Thanks, Chip Tuthill Associate member PTG Tuthill's Piano Service< Hi Chip - If you wish, I would be glad to send photo files of the process being done. I would recommend the 1 1/4" pinblock. You'll want to have a short and a long straight cutter for your router. If the sides of the inserts are parallel you can cut them on the table saw for a tight fit, and not have to use any epoxy to fill gaps. I just use a thin layer of Gorilla Glue all around, and a long screw on each of the four corners. But, the pictures show the whole process better than I can explain it. Chuck Behm -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100412/b5e0cf06/attachment.htm>
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