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Registered Member #316
Joined: Mon Mar 13 2006, 01:30PM
Location: Marietta, GA
Posts: 212
Come on, folks! Here's an idea: DON'T BREATHE FUMES FROM BURNING PLASTIC!!! In fact, why not just avoid burning the plastic to begin with. No need to fight over which plastic is worse, it's all nasty. But Tesla500, the underwater wire heating is pretty cool.
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
Can you explain how do teflon fumes actually cause burns?
At high temperatures it decomposes to hydrogen fluoride and other fluorine compounds that are very corrosive that may cause chemical burns that will develop for many hours after exposure.
There is no argument if other decomposing polymers are more dangerous, the disagreement was about the statement "Teflon fumes are not bad health-wise".
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
While Teflon fumes are actually exceptionally nasty, heating PTFE cannot generate HF. There's no hydrogen. On the other hand, due to the presence of water in the atmosphere that's a technical point. Of course, it's not a great idea to breath the fumes from burning anything. In the grand scheme of things a few experiments like this are not likely to kill anyone. It would be a different matter if someone were recovering scrap copper by burning off the insulation from lots of cable. Can we now get back to the gratuitous destruction we all know and love?
Registered Member #347
Joined: Sat Mar 25 2006, 08:26AM
Location: Vancouver, Canada
Posts: 106
Thingmaker3 wrote ...
Tes, how many watts and what wire size & length were used?
Were are not sure of the wattage, but the welder puts out about 300a short circuit, we have not measured the voltage across the wire.
The first experiment used 26AWG wire about 6" long, with the welder set to 30A. The second experiment used 4 18AWG wires in paralled (computer powersupply power cable). The underwater ones certainly were interesting.
We are well aware of the dangers of the gases/fumes that are formed when certain types of plastics are burned and are very carefull not to breathe the fumes in.
Registered Member #316
Joined: Mon Mar 13 2006, 01:30PM
Location: Marietta, GA
Posts: 212
You've got a nice beefy welder there, why not make a carbon arc furnace? You can get carbon electrodes at a welding store or some hardware stores, then make a box of refractory and melt anything you can think of!
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Fun with a 225A arc welder!
