[pianotech] Chickering Grand Hammer Flanges?

[Al Guecia/Allied PianoCraft]

Joe, what do you use to heat and how do you know when you reach the proper temperature. 

Al -
High Point, NC



On Jul 26, 2011, at 1:04 AM, Joseph Garrett wrote:

> Anyone have an idea the difference of expansion rates of Steel and Brass.
> I'm into a Chickering Grand and am planning on trying to anneal them
> puppies. Reason for asking is wether to remove the screws and drop screws
> or leave them in during the annealing process. Any one have some thoughts?
> Regards,
> Joe
> 
> 
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I
> 
> 

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