[CAUT] Irwin bit

[David Ilvedson]

I use a block of wood on the top of the keybed to help with that splintering...

David Ilvedson, RPT
Pacifica, CA  94044


----- Original message ----------------------------------------
From: kpiano <kpiano at goldrush.com>
To: "College and University Technicians" <caut at ptg.org>
Received: 10/16/2006 3:03:03 PM
Subject: Re: [CAUT] Irwin bit


>Really the hole saw is the best bit for the job. It is longer in length than the forstner 
>and so
>will not wander like the forstner bit does. I have never liked the forstner bits for no 
>drill
>press/freehand drilling. Also the hole saw has a real saw blade making the cut which 
>will splinter
>the keybed less. Get a Milwalkie removable arbor so you can buy the good saws.

>Keith


>On Mon, 16 Oct 2006 16:11:06 -0400, Wolfley, Eric (wolfleel) wrote
>> David,
>> 
>> I use a 1 1/8" hole saw for this operation. Hole saws usually have a ¼" pilot bit 
>which 
>> can be drilled into the end of a wooden dowel that is the same diameter as the 
>original 
>> pitman hole. This keeps the hole saw from wandering around everywhere until you 
>get it 
>> started. I haven't seen the forstner type bit you are describing but if you could 
>thread 
>> it onto a dowel it would work as a guide in much the same manner as the pilot bit in 
>the 
>> hole saw.
>> 
>> Eric
>> 
>> Eric Wolfley, RPT 
>> Head Piano Technician 
>> Cincinnati College-Conservatory of Music 
>> University of Cincinnati
>> 
>> ________________________________
>> 
>> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of David 
>Ilvedson
>> Sent: Monday, October 16, 2006 3:15 PM
>> To: pianotech at ptg.org; caut at ptg.org
>> Subject: [CAUT] Irwin bit
>> 
>> List,
>> 
>> I usually use a forstner bit for retro-fitting pitmans in Steinways and other grands. 
> 
>>  Problem is starting the forstner bit into the keybed.   I came across an Irwin 
>1&1/8" 
>> forstner type bit except with a threaded starter tip, about 3/4" long.   As I think 
>about 
>> it now I suppose the starter tip wouldn't be of much help since it is going into the 
>> pitman hole...anyone used this bit for this repair?
>> 
>> David Ilvedson, RPT
>> Pacifica, CA 94044