Enlarging existing bridge pin holes

[Mark Ultsch]

Yes, Bill, I've used the industrial Dremmel ($100+), with a router
speed control for slower speeds.  There is a limit on turndown so
don't push and expect really slow RPM's.  I found it very controllable
if you use the right reamer.  I'm certainly not an expert in this
area, though, as you know.

Mark Ultsch
Madison

----- Original Message ----- 
From: "William R. Monroe" <pianotech@a440piano.net>
To: "Pianotech" <pianotech@ptg.org>
Sent: Friday, April 29, 2005 8:57 PM
Subject: Re: Enlarging existing bridge pin holes


> Anyone ever try using a Dremel tool for drilling out bridge pin
holes?  With
> the variable speed ones, it gets down to 5000 rpms.  Is that still
too fast?
>
> Respectfully,
> William R. Monroe
>
>
>
> ----- Original Message ----- 
> From: "Ron Nossaman" <rnossaman@cox.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Thursday, April 28, 2005 6:56 PM
> Subject: Re: Enlarging existing bridge pin holes
>
>
> >
> > > Rather that a spiral reamer - use a straight fluted reamer as
that
> > > definitely won't pull into the existing hole.
> >
> > Left hand spiral, right hand cut. It doesn't pull down as it cuts,
> > it pushes back and doesn't chatter in wood like straight flutes
can.
> >
> >
> > > Be very careful to hold the reamer at the same angle as the
original
> hole or
> > > - well - we don't want to see what would happen :-(
> > >
> > > John Fortiner
> >
> > Ouch! Very nasty. This is one of the two main reasons I had for
> > using a modified drill bit.
> > Ron N
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> >
> >
>
>
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