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Aug 03, 2005 20:04

And the QotD (Quote of my Day) is ( Read more... )

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mindfractals August 4 2005, 21:40:26 UTC
casting and welding are two fundemental area's. If you can do one of these, you can make parts for your other experiments. its really handy ( ... )

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part 2. mindfractals August 4 2005, 21:41:07 UTC
My burner is made from mild steel. the burner itself stays cold. ever used a lighter? the place where the fuel comes out is pretty cold compared to the flame. why? its ejecting gas, and the combustion takes place where the ejected gas can mix with oxygen and slow down enough to stablize the flame. The only reason it would ever get hot, is because the heat from the flame radiates. So, Mild steel works really well ( ... )

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mindfractals August 7 2005, 09:30:22 UTC
arcing to melt metal? yes. check out my Arc melting pictures. level of difficulty and expense is pretty high though. I would not recomend attempting to build an arc melting unit.

cows. funny.

blower. $65 for the nice one I have. a squirel cage blower could probably bought from www.harborfreight.com for cheap. I recomend trying out a charcoal method first. its still pretty fun, and works well. then just get some sort of blower. then you dont have to worry about explosions.

Its good that your school did not provide you with KNO3. there is this thing called liability. and bad press.

That must be a big crucible, or a small bath tub. there is a 30 lb graphite crucible in the lab. its big, but not that big. I doubt that the ore refinery would have anything small scale. at all.

The cement and dildo thing made me laugh. keep up your investigation.

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mindfractals August 7 2005, 08:45:45 UTC
you can make or buy them. you have had some simple physics, right? simple machines... tongs... you can weld them, forge them, cast them, machine them, buy them. however they are really expensive to buy.

you would want them made from a material that wont get soft, when extracting the crucible from the heat your working with. since you probably wont be casting iron, mild steel would work just fine.

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dumpster_boy August 7 2005, 07:47:09 UTC
Do you know where I can find some perlite? Or where i could get any form of insulation from? Also I want to make some castings. Would perlite be any good for casting if I mixed it with something to bind it? Some other kind of ceramic? Would prefer to stay away from green sand. Any other ideas?
Oh and say I was using a lpg gas cutting set with a heating tip would this work for heating? Or does it require more oxygen than my regulator can supply?
Are there any alloys that can be welded to make a medium range crucible?
At the moment im only a few inches away from construction. But I need a decent crucible. If worst comes to worst ile use green sand for casting.
By the way very nice job. How much for a thermo couple?

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mindfractals August 7 2005, 08:42:07 UTC
vermiculite and perlite can be found really really cheaply at a gardening/landscaping store. Anywhere that would sell soil for plants. Its used for soil enrichment or conditioning. Ceramic fiber Insulation might be found at a fireplace shop along with fire bricks. One way to find something local would be to visit a local pottery shop (where they actualy make pottery). they use pretty big kilns what must be well insulated. They may have some extra materials you could have, or tell you where they got them ( ... )

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mindfractals August 7 2005, 09:21:38 UTC
sorry, my replies are long, and LJ only lets so many characters per post ( ... )

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