[CAUT] Irwin bit

[kpiano]

The threaded part is called a worm. You can screw a piece of plywood over the hole and mark the center of the new hole. Then when you drill into the old hole the hole in the plywood keeps the bit centered. The worm keeps the bit centered and drilling in a straight line. The plywood will do the same thing with the forstner. Pre drill the hole in the plywood if you please. What you bought is a self-feed bit usually used for plumbing.

Keith   
> 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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