Hi Simon
Don't quench in water or oil or anything.
Quenching makes any metal go hard or brittle etc.
To anneal just heat to cherry red and allow to cool in the ambient
temperature.
It will then become soft and malleable.
Trust me, plumbers do that all the time here in WA as the water piping is
required to be cold drawn, ie hard and stiff, and to expand the pipe to make
a joint the pipe requires annealing.
cheers from WA
John
----- Original Message -----
From: "Simon Lachlan" <simon.lachlan@homecall.co.uk>
To: "'Healeys'" <healeys@autox.team.net>
Sent: Tuesday, November 24, 2009 2:45 PM
Subject: [Healeys] Copper washers.
>I need a copper washer. So, I've got a box of new ones of various sizes.
>All
> the wrong sizes.
> I've got a box of sundry old flat washers amongst which is an old copper
> washer of the right size. But it's old and has presumably ceased being
> soft
> and malleable.
> I'm not even sure that I can even spell "annealing" at this time of night,
> but isn't it the process by which one applies heat to restore metal's
> previous malleability? Do I heat it cherry red and then quench it in water
> or is it oil or what?
>
> It's a lot to ask for one copper washer, but a)my daughter* pinches my
> daily
> tintop to go to work so I can't go and buy one and b) I like to know these
> things.
> *If she can't use my car, she can't earn enough to buy her own car! I'm
> going to pay half, but she's got to learn!
> Simon
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