Ron, I'm still not clear on why all the fuss with the two rails affixed the soundboard when something could be attached to the router base. Sort of like a router riding on stilts. Does this make any sense? Greg Ron Overs wrote: > Greg, > > You wrote; > > >. . . . . > >A few months later I was looking at Ron Overs web page where he was > >recapping a bridge by routing quite a good ways down. . . Now I > >think I saw 2 rails on either side of the bridge for the router to ride > >on. Is that right? > > Yes you did. > > >If that is the case, would you not experience the > >same difficulty following an unpredictable crown in the board? I was > >thinking, (dangerous ... especially for me), why not attach the rails > >directly onto the underside of the router plate and let it ride on that. > > Firstly, the rails are attached to the board via masking tape which > first covers the sound board panel, and then body filler repair putty > (for car body repair) which attaches the rails to the masking tape > (which has been de-waxed with thinner prior to its application. > > >More like a sort of free hand approach. Would this be unstable? Would it > >possibly eliminate a straight rail not mating quite so perfectly to a > >crowned board? > > The procedure is very easy. The lower edge of the rails are roughly > planed to the curvature of the board prior to installation. The > height of the rails are set slightly higher than the required > finished height also prior to installation. After installation, the > rail height is scraped and finished to that height required for > removal of a predetermined height of the original bridge. > > >In your drying process are you left with a completely > >flat board and therefore this is not an issue? If this is the case how > >do you maintain the moisture content of the board while you are > >performing the various procedures on the bridge? If you followed a > >crowned board then would you have difficulty attaching a replacement cap > >to what would then be a crowned bridge base? Does any of this make any > >sense or am I just spitting into the wind again? Thanks! > > Even if you end up with a slight convex curve in the machined surface > of the bridge, as is often the case, the new bridge cap will flex > easily to fit. The curve will always be very slight and uniform. Ron > N raised this issue a few months ago when referring to the fit of > flat-planed bridge bases, when fitting them to the curved sound board > panel. Again, no problem, the bridge cap will pretty much follow the > profile of the board with a slight backward tilt. > > Hope this answers your question. > > We're doing some other new stuff with bridge caps recently. Still > checking reliability of the new stuff as yet, so far it's looking > good. > > Ron O > -- > Overs Pianos > Sydney Australia > ________________________ > > Web site: http://www.overspianos.com.au > Email: mailto:ron@overspianos.com.au > ________________________ -- Greg Newell Greg's Piano Forté 12970 Harlon Ave. Lakewood, Ohio 44107 216-226-3791 mailto:gnewell@ameritech.net
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