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2011-04-14, 3:57am
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Senior Member
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Join Date: Sep 01, 2005
Posts: 1,338
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Chinese Cobalt Tubing
I'm having a problem with this stuff. It's getting a film on it that I'm guessing is reduction. Before I try working it again I thought I'd ask here if there are known problems with this color? It's so pretty and I'm trying to make some vessels. TIA
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2011-04-14, 6:58am
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ManBearPig
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Join Date: Jun 28, 2005
Location: Roanoke, VA
Posts: 8,540
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Try working with a more oxidizing flame. I've used a LOT of that tubing and never had that problem.
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2011-04-14, 12:57pm
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Thanks Chad. I'll try again.
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2011-04-17, 8:03pm
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Join Date: Sep 08, 2005
Location: Beautiful Colorado
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What torch are you working on, Rose.... and as said above... oxy..
I have not had any problems and working on a Phantom
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Leslie
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2011-04-18, 4:13am
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I'm on a Scorpion with an M-20 and 2 5's. Haven't had a chance to try again but it's probably too little oxy. It's thick walled so I 'm sure I had everything turned up pretty high. I'll try again and go slower with more oxy.
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2011-04-18, 5:18am
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ManBearPig
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Join Date: Jun 28, 2005
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You don't need a huge flame to work tubing. Remember, even extra heavy wall tubing is only 4mm thick...
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2011-04-18, 5:17pm
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Join Date: Nov 06, 2005
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Use more oxy. However, this is one of the reasons I gave up on most Chinese glass. I find that the savings in material don't make up for the hassles and time lost in working it. Plus, I already had a kiln load of the stuff end up to fragile to sell. Not worth the gamble if you are selling your work, and I wasn't comfortable selling pieces made with glass that I didn't believe in.
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Eric
The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing. ---- Albert Einstein
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2011-04-20, 4:23am
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Chad, good info. That puts it in perspective for me.
Mort, I bought it to play with, not to sell. I just loved the color. But I appreciate the info.
Now that the wind has died down around here I need to play with it again. The wind wreaks havoc on my fan and blows the fumes back at me.
Thanks guys!
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