[CAUT] Irwin bit

[Wolfley, Eric (wolfleel)]

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

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