Can you run a hardened screw into the remaining
portion, like a drywall screw, and pull it out?
( Vise grips on block to act as fulcrum, perhaps with
a drop of penetrating oil on the periphery? )
Thump
--- Ron Nossaman <RNossaman@cox.net> wrote:
>
> >Ron,
> >Good ideas. Actually the piano is coming in more a
> complete restoration
> >next summer in which I'll have full access from
> underneath the piano and
> >punching the material back up should be more
> probable.
>
> Hi Tom,
> Then that's probably your best bet. If the pin
> involved spans two unisons,
> it should be reasonably ignorable until then.
>
> >I'm still amazed at the rigidity of this material.
> I thought this would
> >be a quick drill out and install time. Lesson curve
> continues!
> >Tom Servinsky
>
> Those little hummers are hardened steel, similar to
> a high speed steel
> drill bit. You aren't going to cut them out with any
> edged drill bit on the
> planet that I'm familiar with. It would take
> aluminum oxide or diamond
> abrasives, and flooding the area with coolant would
> be a tad
> counterproductive. It does surprise me that it won't
> drive on through
> though. It seems pretty unlikely to me that the
> holes in the plate wouldn't
> be drilled through, but it's possible. I had an SF
> in the shop about seven
> years ago, but I don't remember if that's the case
> or not. There's a lot of
> spring to these pins, and it takes a pretty good
> lick at best to get them
> to move in the hole, so even with a clear through
> hole it's hard to move them.
>
> You're right. Probably best to wait for the
> scheduled rebuild.
>
> Ron N
>
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