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Pastimes : ceramics-clay-pottery -- Ignore unavailable to you. Want to Upgrade?


To: AugustWest who wrote (40)12/8/2001 6:38:16 PM
From: AugustWest  Read Replies (1) | Respond to of 338
 
Dull red. So I'm beyond the point of anything that migh have happened to ruin the load. If the peices weren't dry enough or taken up too fast they would/will pop just like a piece of shale when you build a camp fire on it. And you don't get to know until unload the kiln.

So now I just take it up to temperature and open it up in a few days(not until it's dropped to about 200-300°. At that point it's safe to lift the lid a few inches to help the cooling process along.

Also, if clay is not properly wedged(like kneeding dough) it will have air bubbles that will pop during the bisque firing. It always pissed me off in college when I would lose a piece because some goof ceramics 1 student's thick air bubble filled piece would pop and take several peices next to it. It didn't take long for me to take charge of loading the kilns and making sure if I had to put someone's peices next to mine, they were pieces I could tell would be okay.



To: AugustWest who wrote (40)12/8/2001 6:40:49 PM
From: Peach  Read Replies (1) | Respond to of 338
 
Thank you. Your spelling is fine, no need to check it.

This is very exciting. Good luck!



To: AugustWest who wrote (40)12/8/2001 6:45:04 PM
From: AugustWest  Read Replies (1) | Respond to of 338
 
<<Pyrometric cones are basically pyrmidal shaped clays made to bend/melt at exact temperatures. >>

I should note additionally regarding the proper melting of cones, large cones(about 3" long are calibrated to melt at I believe a rise of 650°/ hour. Not certain on that, I'll have to check. snamm cones(about 1 1/2", I don't remember. I use large cones for glaze/gas firing, small cones for the electric kiln.