This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I use an external tooth lockwasher under the plate. The reason: I = don't want the hanger bolt to turn in the rim when I tighten the nut on = top. Carl Meyer PTG assoc ----- Original Message -----=20 From: Terry=20 To: Pianotech=20 Sent: Saturday, January 08, 2005 8:34 AM Subject: Re: seeking wood screws Why do you put a washer on top of the up-side-down lock nut that goes = on the backside of the plate - assuming of course that the nut has = enough horizontal surface area to mate with the plate (and not want to = fall through the hole)? I would just be afraid of a potential = rattle/buzz if one of the assemblies got a little loose (I realize that = none should be). I just haven't found that to be needed. I do put a = washer on the top though - but mostly to protect the plate finish while = tightening the acorn nut on top. 5/16-inch hole gives me a nice very snug fit. Terry Farrell All this talk of screw sources has had me browsing some of these = sites. Very cool. I've always tried to maintain an organized supply of = various screw types and sizes which has been a huge asset. But it is not = always easy to get big boxes of the sizes you want any more. Most places = only sell the little 15 piece plastic packages (very expensive way to = buy screws). Anyway, I have been wanting to do the plate suspension trick for = adjusting downbearing. Del spoke of it at the recent Indy conference. = This involves threading socket cap screws (headless bolts with recessed = allen socket) into the inner rim, running down a lock nut upside down = with a washer on top (a sufficient clearance well counterbored into the = soundboard), the plate lowered onto the washer, a chrome washer and = acorn nut on top. The height of the plate can then be easily raised or = lowered by removing the acorn nut and turning the stud with and allen = wrench.=20 Attached is what I ordered. I got the hanger screws just for fun. If = the machine thread doesn't work well, which Del said it would thread = right into the wood, I can always fall back on the hanger screws with = their lag thread.=20 Does anyone have a recommended hole size to drill the rim for the = 3/8" machine thread to screw into? Blessings, Dean ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/fe/a3/47/1f/attachment.htm ---------------------- multipart/alternative attachment--
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