[pianotech] Chickering Grand Hammer Flanges?

[Mike Spalding]

Joe,

If you decide to go ahead with the annealing, I would strongly recommend 
removing the screws first.  Steel and brass react very differently to 
heat treating.  Whatever works for brass will do something different, 
and probably unwanted, to the steel screws.  Sorry I don't have enough 
knowledge/experience to predict exactly what.. hence my caution.

Mike

On 7/26/2011 9:00 AM, Joseph Garrett wrote:
> Tom,
> I guess that was part of my question, as well.<G> I'd like to retain 
> the flanges, if possible, but there are issues. Still waiting for some 
> of those eye opening answers.<G>
> Joe
>
>     ----- Original Message -----
>     *From:* Tom Driscoll <mailto:tomtuner at verizon.net>
>     *To: *joegarrett at earthlink.net <mailto:joegarrett at earthlink.net>
>     *Sent:* 7/26/2011 6:16:10 AM
>     *Subject:* Re: [pianotech] Chickering Grand Hammer Flanges?
>
>     Joe,
>        I don't know the answer, but I do have a related question
>     about  frozen  drop screws on these flanges. I've had numerous
>     experiences  where they just break off .
>       So my somewhat related query is will heat break them loose ?
>        Awaiting our crews response to both questions,
>      Best,
>      Tom Driscoll
>     On 07/26/11, Joseph Garrett<joegarrett at earthlink.net> 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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