Snails - Response on Threads Part 4

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tiburonfirst

They call me 'Tibs"
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and it's time

goodnight and sweet dreams, frannie!
sleep-anim-male-sleep-sleeping-smiley-emoticon-000368-facebook.gif


and whoever else passes through ;)
 

TomCatt

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There are two common resistance wires - Kanthal and nichrome. Nichrome is the most common and cheapest, so most pre-built coils/atties/cartos/etc are most likely nichrome. Two common compositions for nichrome wire are Nichrome 80 (80% nickel / 20% chromium) and Nichrome 60 (60% nickel with the remaining 40% being a combination of chromium and iron).

Kanthal is made of an alloy of iron, chromium and aluminum. The chemical symbols for these are Fe, Cr, Al. It's also referred to by these symbols - FeCrAl and called "feckeral". (As an aside: if you take a thin foil made of FeCrAl and heat it to ~1000 C for 8 hours, the aluminum migrates to the surface and forms an insulating layer of aluminum oxide. Needless to say, heating steel foil for 8 hrs at 1000 C is not a very economical way to produce an insulating coating on it ;). )
 

Katya

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Meanwhile, people we all know and love are pushing them....... ;) :)wub:)

IDK. Seems kinda iffy to me. But I'm sure there's a bunch of long-winded threads on the topic that I just haven't taken the time to digest yet. We'll see if they grow a third arm out their back or something. So I'll check into it a year from now....

Atty, all wires used in vaping are somewhat iffy, to be perfectly honest. We've been using nickel wire for years in your stock coils--the NR (which is technically LR, not NR, BTW) part of the coil is made out of nickel wire, AFAIK.

Just FYI ATSDR - Public Health Statement: Nickel it says that low level nickel exposure over long periods did not produce cancer cells... That's good to know..

And other metals, like chrome and brass alloys--there are threads now discussing this very subject since it became known that Aspire tanks (all of them) come with a chromed brass chimney and not stainless steel as advertised. Dr. Farsalinos is all set up and ready to test our wires and what exactly happens to them when they are repeatedly heated and cooled during vaping, but he doesn't have enough money to run the study--I donated, but that's all I can do to help. :facepalm:

Αs you may know, i am currently testing another temperature-control device, which i have in my hands. Fortunately, i am expecting to receive a DNA 40 device, after long waiting time (understandably of course, that was a period of intense work at Evolv). So, once i receive it, i will test that too. The problem with the DNA device is that the nickel wire has a very low resistance, thus, i will not be able to compare the results with low-wattage vaping (e.g. ego batteries or anything below 10 watts). My purpose was to compare the temperatures and emissions of temperature-regulating devices vs conventional devices.

For the wires, we have the lab and equipment to perform tests on wires. Unfortunately, we do not have any funding. The idea and protocol of testing wires is ready since last year. But we cannot proceed. It is a pity, because we could easily find the most appropriate wire, which could be used even in large scale production without any problems and without elevating the cost of the products.
It seems that we will not even reach our target for the current crowdfunding, because the response and participation-contribution from the e-cigarette industry is until now disappointing.

Dr. Farsalinos is also against dry burning as it may lead to deterioration of metals. Many modders recommend tension builds using a pin vise or a coil winding gizmo for better adhesion instead of torching the wire prior to building a coil.

Dry burn helps in nothing but accelerating the thermal breakdown of the metal. Use acetone and water or ethanol to clean the wires before making the coils. It is really useless and probably harmful to dry-burn the coils.

I am about to receive the DNA device witin the next few days. It is going to be rigorously tested, not only in terms of temps but also in terms of aldehyde release (compared to regular VW devices AND tobacco cigarette smoke)...

So. if you're concerned, PLEASE ask your vendors to contribute to this critical study at http://igg.me/at/ecig-temp/x/8846317.

Anyone can donate, BTW! Any amount helps.
 
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Sgt. Pepper

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There are two common resistance wires - Kanthal and nichrome. Nichrome is the most common and cheapest, so most pre-built coils/atties/cartos/etc are most likely nichrome. Two common compositions for nichrome wire are Nichrome 80 (80% nickel / 20% chromium) and Nichrome 60 (60% nickel with the remaining 40% being a combination of chromium and iron).

Kanthal is made of an alloy of iron, chromium and aluminum. The chemical symbols for these are Fe, Cr, Al. It's also referred to by these symbols - FeCrAl and called "feckeral". (As an aside: if you take a thin foil made of FeCrAl and heat it to ~1000 C for 8 hours, the aluminum migrates to the surface and forms an insulating layer of aluminum oxide. Needless to say, heating steel foil for 8 hrs at 1000 C is not a very economical way to produce an insulating coating on it ;). )

thanks, Catt. So, I've been using nickel in my pre-built coils all of this time. What the heck! Nickel wire it is for my rDNA 40.:)

p.s. now all I need is some nickel foam.;) Tibs, do you know where I can get some?:D
 
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