Broken Keys Repair

[Terry]

I might add, that when I do this repair, I chisel away a bit of both sides
of the key. Then I epoxy in maple veneers to both sides. That way I know I
have enough strong wood in there even if I have to sand or chisel a little
off for clearance.

Terry Farrell



> Hi Doug, obviously the balance hole and mortise is the weakest spot. The
key
> button gives you support and so if that is loose or broken it contributes.
> Something might have fallen into the action and jammed it or an angry
person
> was around the piano. Either way a bad repair job the first time makes it
> even harder.
>
> Two thin pieces of veneer glued onto the sides like a splint. Epoxy for
> maximum gap filling strength. Clamp between the two adjoining keys for
> correct alignment. Sand down if too thick.
>
> Keith
>
>
> > I tuned a piano today and the key broke where it
> > was previously repaired before.  It broke in the middle
> > near the balance rail hole.  I could see that it broke
> > and was glued at some point.
> >
> > My question is, why do they break, and what method/glue
> > do you use to prevent breakage again like this after I repair
> > it?
> >
> > Thanks!
> >
> > Doug Renz