> 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 I get mine at a local surplus yard, but McMaster-Carr would likely be my choice if I didn't have a local source. A metal cutting blade in the bandsaw makes a selection of lengths pretty quickly, and I face them off and drill them in the lathe. I'd just part them off on the lathe too, but the stuff I get locally (and cheaply - $2lb) is really hard and the bandsaw is easier. When they're finished, I weigh each and mark the weight on the side that goes to the soundboard with a permanent marker so I know where I'm at when I'm tuning impedance and go to the drawer for something a bit lighter or heavier. Ron N
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