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Joined: Feb 2009
Posts: 7,444 Likes: 204
Sidelock
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Sidelock
Joined: Feb 2009
Posts: 7,444 Likes: 204 |
I thought it was an interesting quenching strategy also. I'd guess if the technique is worked out, the only down side would be the crucible get eaten up by turning into scale relatively quickly.
I wonder if there's a difference between the Kingsford (or?) we might pick up here and BBQ charcoal available in England.
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Joined: Dec 2001
Posts: 6,980 Likes: 397
Sidelock
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Sidelock
Joined: Dec 2001
Posts: 6,980 Likes: 397 |
I do not think scale is increased during the quench. Any scale forming on the crucible happens inside the kiln. I think the crucible being dunked as well will not hurt it.
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Joined: Jan 2002
Posts: 13,127 Likes: 1128
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 13,127 Likes: 1128 |
The crucible with the lid sealed on with the clay is submitted whole into the quench and swirled around. The pressure usually blows the lid off. What happens when the internal pressure does not blow the lid off? Failure to get proper colors? SRH
May God bless America and those who defend her.
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Joined: Oct 2014
Posts: 312 Likes: 1
Sidelock
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Sidelock
Joined: Oct 2014
Posts: 312 Likes: 1 |
the first result ( RTO tool ) the lid was only partially lifted by a few mm, the crucible cooled very quickly; as in by the time i had grabbed a screwdriver from 4 feet away it was cool enough to pry off. - The lid is never violently blown off and i introduce the crucible to the quench quickly and the box entering at something shy of 90 degrees the pressure seems to do the rest.
True the crucible does create a lot of scale and has a limited lifespan; my crucible is a steel tray made from bending some ~2mm sheet steel, its about 4 inches high by about 5.5inch square, its drawn onto the steel like a box packed flat, the lid is just a square piece of the same steel that sits inside the tray and is sealed in place by clay.
The biggest issue with the process is the BBQ charcoal, its of the "light in the bag" variety and im sure it has some parafin or something on it to help get it going, this finds its way out of the crucible - it would be an interesting experiment to see weather using special charcoal VS this BBQ stuff would yeild different results. I don't have the time or funds at the moment to conduct this as an experiment but may do in the future.
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Joined: Feb 2009
Posts: 7,444 Likes: 204
Sidelock
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Sidelock
Joined: Feb 2009
Posts: 7,444 Likes: 204 |
I do not think scale is increased during the quench.... I think you're correct Steve. My thought was some of the scale is probably blown off in the quench. What I have noticed is when I dump my cover in with the rest of the quench material, it gets consumed relatively quicker than the crucible. Then again, I can't say I'm perceiving it correctly. Thanks Demonwolf for your write up, follow up comments, and pictures.
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Joined: Jan 2009
Posts: 5
Boxlock
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Boxlock
Joined: Jan 2009
Posts: 5 |
I have tried this exactly once - much the same as demonwolf - but more crude. My "crucible" was a bean can with the lid laid on top and not sealed. The kingsford was pulverized, the butt plate wrapped in wire and suspended in the can. My furnace was a Weber kettle grill and the quench was rainwater circulated with the garden hose. I had a helluva lotta fun and was pleasantly surprised. Hopefully the link will show a short video clip............ https://www.dropbox.com/s/tgl4101cc6y6yan/Backyard%20CCH.wmv?dl=0Regards, Joe
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Joined: Sep 2011
Posts: 150 Likes: 2
Sidelock
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Sidelock
Joined: Sep 2011
Posts: 150 Likes: 2 |
Joe, Looks pretty darn good, better than many. Must be some magic in that Kingsford charcoal. Chuck
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Joined: Dec 2008
Posts: 277 Likes: 4
Sidelock
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Sidelock
Joined: Dec 2008
Posts: 277 Likes: 4 |
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Joined: Jan 2002
Posts: 1,560 Likes: 70
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 1,560 Likes: 70 |
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