Exactly, mine take about an hour and can knock a buzzard off a manure wagon for a half a mile... nasty stuff.
The end of microcoils?
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I have a feeling that Dr. Farsalinos hadn't thought the whole issue through before he spoke, unfortunately. First of all, he seems to be conflating several different processes we use while making coils: torching, pulsing, and dry burning. He calls everything dry burning and apparently is under the impression that people just heat the coils haphazardly in order to eliminate hot spots and hot legs and whatnot, but he never once mentions oxidation. He seems to approve of coilers, but I have no idea why? People make contact coils on coilers and those coils are subsequently heated and retouched with tweezers to make them glow uniformly. Why would coilers be better than any other method? Does he think that coilers make spaced coils that don't need to be 'corrected' after winding? And what about annealed and non-annealed kanthal? Does he have a preference?
I'm so confused by his recommendations....
I have a feeling that Dr. Farsalinos hadn't thought the whole issue through before he spoke, unfortunately. First of all, he seems to be conflating several different processes we use while making coils: torching, pulsing, and dry burning. He calls everything dry burning and apparently is under the impression that people just heat the coils haphazardly in order to eliminate hot spots and hot legs and whatnot, but he never once mentions oxidation. He seems to approve of coilers, but I have no idea why? People make contact coils on coilers and those coils are subsequently heated and retouched with tweezers to make them glow uniformly. Why would coilers be better than any other method? Does he think that coilers make spaced coils that don't need to be 'corrected' after winding? And what about annealed and non-annealed kanthal? Does he have a preference?
I'm so confused by his recommendations....
I think that Pedro (from Caravela Mods) , who also participate in Farsalinos answer about the radio declarations about dry burns …may be a lot to do with these statements.
In June 2014 Pedro wrote in his blog:
“ I'm making real lives temperature test inside of one ohm 306 during vaping. Just one or two notes, a dry 306 of 1.5 ohms (from cisco) cam reach using a 700 degrees Celsius. At this temperature the possibility of formation of hexavalent form of chromium is real. So NEVER PUT YOUR COILS RED.”
And:
“I recommend to change the cotton if you see too much rust on it. NO DRY BURNS. Dry burns can leave to the formation of hexavalent chromium. Dry burns can also increase the degradation of the coil and burn the juice. If you use dry burns to "clean" the coil what you are doing is to promote hexavalent chromium and carbonised juice aromas. You think that the aty is clean because you do not feel the previous juice, but this means that you carbonised the aroma. Let's move forward to Ti asap.”
Pedro sugest the Ti wire like the most safe.
Hi Katya,
I love Pedro like a brother. One of the kindest and gentlest people I've had the opportunity to know. IMHO, he is a better authority on THIS subject than Dr. F is, as he is a Materials Scientist with an emphasis on metals and coatings.
That said, Pedro has a large and genuine concern for the health of vapers and I think he is predisposed to err on the side of caution if he has to take a position. He was among the first in raising the issues of silica and mesh as wicks and gave me a sample of anodized mesh he was experimenting with. It worked really well, but I was using it in a dripper and had to embed cotton tails into the ends to feed it and it was good, but a lot of effort.
Oh and yes, I did take that picture myself. I have NO photographic skills whatsoever. Proof that even a blind squirrel finds the occasional nut. Thanks for your kind words.
Does anyone know Pedro Carvalho's qualifications as an expert in metallurgy? I did a quick Google, but his name is pretty common, and I couldn't identify him with any certainty. The closest I could find was a biochemist in Portugal. I'm curious, because Dr. F. cite's his expertise without any evidence. In any case, he didn't really add any value to the dialog.
Your post popped up while I was multitasking and writing my previous post. Can you point me at Pedro Carvalho's bio somewhere? I'm confused about how he could support and amplify the claims Dr. F has made about coils. It would be great if he could join this thread and participate in this discussion.
Which is probably why our good doctor summoned him for help.
There in no doubt in my mind that both of them, Carvalho and Farsalinos, care about our well-being. I just wish I knew what do right now. I do rebuild my coils and I could use more specific recommendations than 'use common sense' or 'do not dry burn'. Should I use annealed kanthal or non-annealed? Should I build spaced coils? Does oxidation protect us from unwanted metals in the vapor? So many questions.
That photograph is my absolute favorite (I have seen a lot of them), and it makes your Caravela look perfectly dreamy... Now that I know you took it, I'll make sure to give you full credit when I include it in my posts.
Lucky you! It's a work of art.
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I've been searching too and I can't find anything either. I'm extremely curious about claimed expertise when I can't verify the credentials. Verification would make me much more comfortable in evaluating the comments and would help in communicating with him to clear up questions.
The corners of the internet sometimes confuse me. I simply want to know his degree and experience qualifications to speak authoritatively about metal coils. This issue of raising concerns about hexavalent chromium is disturbing. And wrong. If I thought for a moment that Kanthal coils were emitting hexavalent chromium, I would stop vaping on them RIGHT NOW. But they're not. And this needs to be corrected. Because it's exactly this sort of falsehood that will give big tobacco the win they're looking for.
@Magaro there's a Contact Me section on Dr F's blog - would you consider sending him an email?
I'm sure he's received a lot but if you introduce yourself with your qualifications I'm sure he'll read it, hopefully sooner rather than later
Maybe a subject containing "Hexavalent chromium is impossible" or whatever is correct to say - to ensure his attention.
I'm sure he's received a lot but if you introduce yourself with your qualifications I'm sure he'll read it, hopefully sooner rather than later
Maybe a subject containing "Hexavalent chromium is impossible" or whatever is correct to say - to ensure his attention.
Your concern is exactly my concern. Misinformation like this can, and no doubt will, be used in efforts to kill vaping. It's particularly disturbing when the information comes from someone one would think would be careful not to misstate. Anyone with even a minimal understanding of metallic materials understands that hexavalent chromium is NOTemitted from kanthal coils in vaping.
For the moment, I'm hoping that LouisLeBeau will bring this thread to his attention and that he will respond. If not, I will definitely contact him.
There was much Talk about Cr(VI) mostly at the End of this thread.
Stainless Steel mesh, Oxide discussion. | Page 20 | E-Cigarette Forum
Not sure how Much of it is of Value. But is one is Interested, they might want to check it out
Stainless Steel mesh, Oxide discussion. | Page 20 | E-Cigarette Forum
Not sure how Much of it is of Value. But is one is Interested, they might want to check it out
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