[pianotech] All points bulletin, or the case of the useless forstener bit

[Ken and Pat Gerler]

I did the same thing by taking a 1” spade bit and putting a cutting edge on the non-business end. after drilling a hole from the bottom of the key bed to accept the shaft of the bit, dropped it down from the inside, hook it into my drill and counter sunk the whole for the “T” nut.

Ken Gerler

From: Rob McCall 
Sent: Thursday, December 20, 2012 5:28 AM
To: pianotech at ptg.org 
Subject: Re: [pianotech] All points bulletin,or the case of the useless forstener bit

Jim, 

Here's an example of a Forstner bit application.  I used it with a right angle drill to create a recess for a large T-nut in the bottom of the keybed to fix a grossly stripped pedal lyre bolt.  It ain't going anywhere now...  :-)  

The forstner bit did exactly what it was supposed to do with ease.  Drilling took all of about 10 seconds. 

Regards,

Rob McCall

McCall Piano Service, LLC
www.mccallpiano.com
Murrieta, CA
951-698-1875




On Dec 20, 2012, at 01:14 , Euphonious Thumpe <lclgcnp at yahoo.com> wrote:


        Jim, Forstner bits ( that's the right spelling) are intended for created flat-bottomed cavities in wood ( such as pouch wells, clearences for bolt heads, and etc.) not drill-through.

        Peace,
        Thumpe 



------------------------------------------------------------------------------
  From: Ron Nossaman <rnossaman at cox.net>; 
  To: <pianotech at ptg.org>; 
  Subject: Re: [pianotech] All points bulletin, or the case of the useless forstener bit 
  Sent: Thu, Dec 20, 2012 3:12:08 AM 

        On 12/19/2012 8:59 PM, Jim Ialeggio wrote:
        > Calling all cars, calling all cars...be on the lookout for a specialty
        > drill bit, posing as a cutting tool. Suspect claims to be armed, but is
        > not dangerous, as it couldn't cut its way out of a paper bag. Answers to
        > the name "Forstener"...
        >
        > Now really, I'm about to completely give up on Forstener bits. They
        > should useful for cutting clean semi-large holes, especially in masonite
        > and template stock, soundboard panels, etc, but they never live up to
        > their billing, except in a drill press. And then only in certain woods.
        > And then clog and burn before you can say boo. Does anybody get these
        > bits to behave reasonably?
        >
        > So I try all the bits in the shop for drilling a clean hole in a
        > soundboard panel and masonite panel template. What comes up on top...a
        > sharp cheap-o Spade bit, with the panel backed-up.
        >
        > How do others manage a clean hole in soundboard panels...hand held or
        > jig held?

        It's called a hole saw. With a 1/4" pilot, drilled half way through one 
        side, and finished from the other, there's no tear out or other such angst.
        Ron N
       

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