David, Where'd you get the gauge? Greg Newell At 10:44 PM 6/14/2006, you wrote: >This is the method I prefer for a quick check of downbearing. It's a >modified dial gauge and the three feet are 1 inch apart. When set on a >level surface the needle points straight down to 6:00. Each increment on >the gauge is .001". So when set over the bridge with the center foot >centered on the bridge and the outer feet on the front and back scale, it >gives a very quick reading of the total bearing (sine(1o) = .018. The photo >shows about 1 degree of residual bearing. > >Of course, it's relatively useless for setting up bearing on an unstrung >board but so is any other gauge. My latest foray is to use my ribscale >spreadsheet for calculating the amount of total deflection under load and >predetermine the bridge height based on calculations (I just hate cutting >those stupid little slots and pulling strings around). I still use a string >and a square to determine whether the bridgetop is square and canted >properly front to back when I do the dry fitting. My final adjustments come >from using an adjustable plate perimeter mounting system. > >David Love >davidlovepianos at comcast.net >www.davidlovepianos.com > > > Greg Newell Greg's Piano Forté mailto:gnewell at ameritech.net www.gregspianoforte.com
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