soundboardinstal again

[David Love]

Where do you get your adjustable perimeter bolts?

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: Ron Nossaman <RNossaman@cox.net>
> To: <davidlovepianos@earthlink.net>; Pianotech <pianotech@ptg.org>
> Date: 7/21/2003 7:38:04 AM
> Subject: Re: soundboardinstal again
>
>
> >So then, is your procedure is to temporarily screw the bridge to the
board,
> >lay the board in the piano, put in the plate, clamp it down in a few
places
> >and set the bearing, then remove everything and notch and pin the bridge
> >clamped to a 1x10?
>
> It has been. Or, I can determine the bridge height at C-8 by measurement 
> determined by string height, make the bridge in it's entirety from that
and 
> my pattern, and put the thing in. I've also made bridges from just the 
> original bridge  height, my pattern, and the crown under load estimates 
> produced by my spreadsheet with no problem. I don't want to do the 
> "traditional" bearing setting method of gouging the bridge cap and
planing 
> it down. I want to put a laminated cap of pre-determined thickness on a 
> bridge of pre-determined thickness and put it in the piano a minimum
number 
> of times. I'm a long way from being efficient, but I'd rather do a little 
> more planning and a little less physical labor if I possibly can.
>
>
> >If so, how do you support the plate over the board at
> >the correct height, as well as hold it down around the perimeter so that
> >you can wedge it down to set bearing?
>
> Sitting on one nose bolt and the pinblock, normally. If it's badly
warped, 
> I might clamp it down to level with blocks and clamps over the rim. It 
> depends on what I've got to work with. I'm probably going to hang the
plate 
> on adjustable perimeter bolts anyway, and hopefully with vertical
hitches, 
> so there is some tolerance here.
>
> Ron N