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Registered Member #546
Joined: Fri Feb 23 2007, 11:43PM
Location: Albuquerque, NM
Posts: 239
You know you can get carbon electrodes for welding that are about as pure graphite as you can buy for a decent price. I sometimes come across large lots of sticks for $10 a case - and a case is 144 sticks that are 3/8" x 12" ...
They have a thin copper flashing on them that will have to sand off if you want the whole thing to glow, otherwise just the tip burns.
When I've done carbon arc welding it gives off a lot of thick white smoke. I think white smoke is the nature of burning graphite. I can't explain it, but I've seen it enough to know that when graphite burns it gives off white smoke.
....anyways, ya think graphite is fun... I have a 1" x 40" moly-carbide loop I want to hook up as an electrode for a glass furnace... someday. that should be fun....
Registered Member #588
Joined: Sat Mar 17 2007, 11:06AM
Location: UK
Posts: 93
Yep a lot of fun, Check out my website page on fun with graphite The picture of the red hot glowing stick is graphite for artwork, I am not sure if it is 100% graphite or not. The only other problem with fiddling with graphite is the really really really bright ark it gives of, Yes that is really really bright, that's the reason why I stopped in the end.
Registered Member #546
Joined: Fri Feb 23 2007, 11:43PM
Location: Albuquerque, NM
Posts: 239
Oh wow....
ok...flash heating lead and aluminum to well above their boiling point is not something you should do at home.... unless you have a _REAL_ ventilation system. Something that will not only exhaust the air, but filter it also, to prevent environmental impact.
An acquaintance of mine recently died from heavy metal toxicity from glass blowing. A combination of silver, copper, gold, cadmium, chrome, aluminum, and sodium fumes in a poorly ventilated studio did him in at the age of 24. he'd been working in his garage for maybe a couple years by that point.
And the visual light from an arc is NOTHING compared to the UV and IR it gives off. I don't know how many amps you were pulling, but a large carbon arc can blind you in a fraction of a second without proper protection. For arcs I'd go with at least a #12 welders shade....
wow....
I had no idea people were being so silly.... you can really contaminate your house if that lead fume floats around and settles on everything. Not good.
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
I did that with my iggy coil connected to a 30V power supply and between the contacts (stainless steel nails) i could start an arc that looked like a welding arc. I realized this and wore 2 pairs of sunglasses. one to reduce the visible and one to reduce the visible and remove the UV. The only thing I melted was steel nails and steel wool. I'm not doing this anymore because I got bored of it and went to MOTs and flybacks.
Registered Member #588
Joined: Sat Mar 17 2007, 11:06AM
Location: UK
Posts: 93
GreySoul wrote ...
Oh wow....
ok...flash heating lead and aluminum to well above their boiling point is not something you should do at home.... unless you have a _REAL_ ventilation system. Something that will not only exhaust the air, but filter it also, to prevent environmental impact.
An acquaintance of mine recently died from heavy metal toxicity from glass blowing. A combination of silver, copper, gold, cadmium, chrome, aluminum, and sodium fumes in a poorly ventilated studio did him in at the age of 24. he'd been working in his garage for maybe a couple years by that point.
And the visual light from an arc is NOTHING compared to the UV and IR it gives off. I don't know how many amps you were pulling, but a large carbon arc can blind you in a fraction of a second without proper protection. For arcs I'd go with at least a #12 welders shade....
wow....
I had no idea people were being so silly.... you can really contaminate your house if that lead fume floats around and settles on everything. Not good.
-Doug
OOPS! Ventilation was a small-ish window and some cardboard to fan it...
Yes, I see big black spots for a couple of seconds, then everything will come back to colour. And no I was not using any eye protection I was pulling around 10 amps DC maybe more, I'm not sure. At the time I never thought of the consequences, I thought there will be none. But there are for every situation.
Ive never made a ark hot enough to make metal melt, I do have a Iggy coil I got on Sunday, and I have not done anything with it, do you know of a good driver circuit.
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
Instead of taking medical advice from people on the forum that clearly do not have a degree in medicine, why not go see a doctor if you are truly concerned. And regardless from what you think it may be from, you should see a doctor if your symptoms don't go away as something else could be amiss.
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
Or you could take advice from someone that does have a degree in medicine - and go and see a doctor. Carbon soot alone is not a problem really. Coal miners have to inhale the stuff for years to cause a problem. Some of the carbon compunds might be less so with a hint of carcinogenicity with nanotubes if I recall. White smoke implies ash from other compunds present. Graphite ash is not white. Carbon monoxide is toxic of course but won't cause a cough. Ozone likewise is quite toxic. The real problem is the other stuff with metal fumes. I gather that lead and aluminum were involved. Aluminum compounds will tend to be oxides and stable. Lead is a toxic compund though although the toxicity is not necessarily respiratory at least in chronic use. In Australia indigenous petrol sniffing is a significant cause of encephalopathy and other neurological damage.
The most likely diagnosis is probably unrelated if your symptoms started "a few days later". A variety of infections both viral and bacterial can cause a prolonged cough with purulent sputum. Mycoplasma "the 100 day cough" and whooping cough are examples and could go on for months with a post bronchitic cough. Unlikely to be fungal unless you have HIV.
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Carbon in lungs?
I was pulling around 10 amps DC maybe more, I'm not sure.
