I don't like machining metal so I just bought some 2" brass stock and had a machinist cut it into 1" pieces and drill a 1/4" hole through the center. Ordered enough stock to make about 100. I don't remember the cost but it wasn't that much and I won't be doing it again for awhile. If you need more than one piece you just put them together with a fender washer between them to keep them from rattling against each other. I ordered the stock from www.rjleahy.com who will ship it wherever you want but there may be suppliers closer to you. David Love davidlovepianos@comcast.net -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Andrew and Rebeca Anderson Sent: Monday, January 30, 2006 4:43 PM To: Pianotech List Subject: Mass Loading Bridges I'm finally getting around to working on the piano which had a boomy crossover from the long bridge to the bass bridge. I'm envisioning getting some rolled brass stock and cutting off pieces for this. I've cut aluminum with a carbide blade, I think brass might be a little harder. How difficult is this to do? I'd drill a screw hole in the center and temporarily set under the bridge until I get the impedance I want. How do you pro's do this? Where do you source your material and what is your favorite means of machining it? Andrew Anderson _______________________________________________ Pianotech list info: https://www.moypiano.com/resources/#archives
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