[TheForge] Spring steel Gun Part

[Peter Fels & Phoebe Palmer]

An old guy from a spring shop described heating springs repeatedly till 
the oil flashed for tempering. Seems like it'd be too low a temperature 
though.

dan tull wrote:
> What was the old tale about putting the spring in an old cotton sock in the 
> oil and lighting it?
> The sock was supposed to burn @ ~ 600d, for the oxidizing color blue.
> And we wondered why all those clock springs were colored blue.
> 
> ----- Original Message ----- 
> From: "Peter Fels & Phoebe Palmer" <artgawk at thegrid.net>
> To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Tuesday, December 08, 2009 4:41 PM
> Subject: Re: [TheForge] Spring steel Gun Part
> 
> 
>> Dave, that handle is probably mild steel and lacks the necessary carbon
>> for a good spring.
>> Make one out of some spring stock or the equivalent..anneal carefully,
>> harden in oil and double draw the temper to a deep blue.
>> That's one possible solution anyway...pf
>>
>> Dave Kammer wrote:
>>> Can anyone give me some advice on how to impart flexibility or spring to 
>>> a small steel part. I have a rather old shotgun with a broken hammer 
>>> spring. I am unable to find this part, so I made one from the steel 
>>> handle of some old aviation snips. The part fits perfect, but after you 
>>> cock the hammer a few times, the spring just starts to bend instead of 
>>> springing back.
>>>   Can heat treating or tempering make the part more springy?
>>>
>>>
>>>
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