This is a multi-part message in MIME format. ---------------------- multipart/mixed attachment The capo through the whole piano is fine from a termination standpoint, = but I'd want something in the capo to space the strings evenly. When = you get down to the point of tri-chord dampers string spacing gets very = important. =20 =20 Those half agraffes in the old Knabe capos, what were they made of? = Brass or something harder? =20 dp =20 __________________________ David M. Porritt, RPT Meadows School of the Arts Southern Methodist University Dallas, TX 75275 dporritt@smu.edu ________________________________ From: pianotech-bounces@ptg.org on behalf of Ron Nossaman Sent: Sun 8/14/2005 10:54 AM To: Pianotech Subject: Re: string termination > Why then not make a agraffe out of steel or some other harder = material? > That may be difficult for the one-off small-shop piano builder, but if > there were a demand to others..... Why would this be so difficult? Why > would brass persist so long? Cost? Ease of machining? > Why not use other termination types like a capo-type bar in all string > sections like you see on cheap old American microgrands? What about > something more like an upright pressure bar arrangement? Actually, it looks to me to be quite possible to retrofit an agraffed piano with a termination bar of harder material than the brass agraffe, along the agraffe line, with a pressure bar behind, screwed into the plate. A cast stepped bar would be ideal for matching speaking lengths within the unison, but I'm curious how well a curved bar would work. Just how critical are slightly mismatched speaking lengths within unisons at those string lengths? I'd guess there is some tolerance. Ron N _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives ---------------------- multipart/mixed attachment A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 6424 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/3e/27/af/f2/attachment.bin ---------------------- multipart/mixed attachment--
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