This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Gang: Two weeks ago, I duplicated a bridge for a local tech from a 10 year = old Baldwin console which had split in the usual manner. After = installation and attempting to pull the bass strings up to pitch, the = new bridge split again down the pin line on the speaking length side of = the bridge. Will now have to make another, but don't want to have the = same result. =20 A few points: Hard rock maple was used, the dimensions, pin size = and positioning were all closely duplicated, and finished with DAG along = the top. Grain orientation was followed according to PTG information. = The new bridge failed the same way as the original one. We did not = measure downbearing, felt there was no need. =20 We are looking at some possibilities: 1. I used the entire length = of the new pin into the wood, did it weaken the bridge along its length? = Did the pins drive in too tightly starting the split? Was there a = flaw in the wood? I havn't seen it yet, so will examine. Should I use = smaller diameter pins next time? Should they be angled more toward the = center (each other) at the bottom of the bridge? Was there a design = flaw in the original bridge we are repeating? =20 Any ideas? HELP ! =20 Mike Kurta ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/7c/ef/a8/92/attachment.htm ---------------------- multipart/alternative attachment--
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