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Cerrosafe --how to use?

 
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  #1  
Old 01-16-2012, 11:26 AM
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Cerrosafe --how to use?

I cleaned the chamber and plugged the throat with 2 patches poured the chamber full then let it cool for 1 hour.
I could not drive it out ended up heating barrel to melt it out.
What did I do wrong?
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  #2  
Old 01-16-2012, 12:23 PM
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Re: Cerrosafe --how to use?

not sure, as I've never had this problem. But would think maybe you got the cerro to far into barrel ?
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Old 01-16-2012, 01:03 PM
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Re: Cerrosafe --how to use?

no I plugged it so the cerrosafe did not go into the neck of chamber.
only the body and shoulder was filled.
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Old 01-16-2012, 01:09 PM
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Re: Cerrosafe --how to use?

heavy rust/pitting in chamber?
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Old 01-16-2012, 01:16 PM
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Re: Cerrosafe --how to use?

or perhaps rough scratches or machining marks that act as anchor points???
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Old 01-17-2012, 10:41 AM
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Re: Cerrosafe --how to use?

I knock mine out at 10 minutes. Cerrosafe shrinks for the first 30 minutes and then begins to grow. At one hour it is supposed to be exact chamber size and at the end of 200 hours it will have expanded approximately .0025".

From the Cerrosafe instructions.
The solidified casting should be removed from the chamber before, or when, it cools to room temperature. If allowed to remain in the mold over an hour, it will grip the chamber walls and be difficult to remove.

If a brass rod won't drive it out I believe you will have to melt it out. Your clock is ticking.

Oops, just reread your post. Looks like you got it out.
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  #7  
Old 01-17-2012, 11:01 AM
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Re: Cerrosafe --how to use?

thank you I will try it again.
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