[pianotech] alternative to new bridge

[Terry Farrell]

Gene - That's essentially how I've been building my new bridge root doglegs - just adding laminations on the front or back of a central core of laminations to enable machining a suitable dogleg. Here are a few pics for your viewing pleasure (this particular bridge root is for demonstration purposes only - I put a lamination of mahogany in the middle of the bridge so that one can easily see how other laminations terminate at doglegs):

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Hope this helps.

Terry Farrell


On Sep 9, 2012, at 7:51 PM, Gene Nelson wrote:

>> I thought of adding material to the back side of the bridge and machining
>> the opposite to keep the bridge width close to original.
> 
> That's exactly what I'd do if I was reusing the old bridge. Make sure it 
> will either clear the plate, or that you can grind the necessary plate 
> clearance.
> 
> *** Clearance is good, no plate grinding necessary.
> 
> 
> I wouldn't separate the bridge. I'd keep as much of the continuous 
> structure of the original as I could by scabbing the back side,with a 
> stack of say, 2.5-3mm slabs, shaping the new curve, recontouring the 
> front to parallel, and recapping the whole thing.
> 
> 
> ***I have some 1/16" flat sawn maple veneer or I could cut up some denser
> maple stock.  I've got a back post from an old upright waiting for a new
> home. Probably a good idea to quarter the stock, trim the scabbing, epoxy it
> up and clamp in place. It should bend ok to match the contour at 2 to 3mm.
> 
> Thanks,
> 
> Gene
>