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  #11  
Old 21-04-2010, 07:49 PM
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Culloch Culloch is offline
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For hardening, once its a good "cherry red" uniformly and lost its magnetic properties continue heating for 10m -20 seconds to replace any heat lost whilst checking colour/magnetism and quench immediately !

For tempering I'd recommend 60 - 90 mins, I stick with 90 and allow to cool to room temp then repeat twice!
Probably overkill and many makers only HT for one cycle but this seems to work for me so I'll stick with it!

Last edited by Culloch; 21-04-2010 at 07:53 PM.
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  #12  
Old 21-04-2010, 07:54 PM
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Quote:
Originally Posted by Mike Bowler View Post
ok spam smart ass when you bring it to cherry red
The only thing cherry red is your nose mate, lay off the sherry!

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  #13  
Old 21-04-2010, 08:44 PM
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Get off my sticky you mong!

This is a serious thread for adults.....
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  #14  
Old 23-04-2010, 07:10 PM
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When tempering more than one blade do you need to extend the time in the oven or increase the temperature to achieve the right RC and at the other end of the scale if you are tempering a small stick tang that was still made in 3mm should you reduce the time or temperature to compensate for less mass?
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Old 24-04-2010, 11:48 PM
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You won't go far wrong with a 60 min cycle regardless of how many blades are in thereand unless they're 6mm + they should temper ok!
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Old 25-04-2010, 07:17 AM
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Quote:
Originally Posted by Culloch View Post
You won't go far wrong with a 60 min cycle regardless of how many blades are in thereand unless they're 6mm + they should temper ok!
Cheers
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