These quoted portions above could not be more wrong.
They do attach leg wires to their coils, but they are low resistance wire, NOT non-conductive. If they were non-conductive then power couldn't even get to the coil. So, yes, electricity absolutely DOES go through it. The low resistance wire doesn't heat up near as much, due to having less resistance.
They do NOT use actual solder to attach the legs, it is more of an arc weld joint than a solder joint. They use a capacitor and connect the low-resistance wire to one lead, the coil to the other, then just touch the two wires together and SNAP they are attached. Which means, there is no solder, no lead, and no rosin in that joint.
Okay you schooled me on that, thanks. So the wire IS conductive but it's just very low-resistance. And the point is that they aren't soldered using extra metals/chems. They are capacitor-"snapped" together whatever that means, maybe heat or some sort or molecular bond using no metals besides what's already in the wire.
I never really got into if the metals in coil wires are completely safe but I've seen threads about it, but figured what I don't know won't hurt me - it's not as if I'm going to attempt to re-invent the coil on my own.
Brass (w/ lead) in build deck parts right near the heat of the coil - some say it doesn't get hot enough to matter, who really knows? - but again, not about to try and build my own atomizers to avoid this.
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That teal tank peeling is alarming! Looks like you soaked it in paint stripper!
I wonder if and ultrasonic cleaner would remove it all, but I doubt it.
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Um, what tanks have paint on the inside? I've literally have had 100+ tanks and never have had one that has paint on the inside.
To be honest, out of the list of RTAs I'm currently narrowing down, not many, especially those with a Silver option, but a lot of the silver ones look like they're chromed or something vs the more basic RDAs I've used in the past (UD Igo-w 316L surgical grade stainless appears to be just plain steel like many other older attys do).
But I really like the features of some of these newer tanks.
Some silver options also look like a frosted finish. They call it media blasted like the Zeus silver RTA pictured below. Which might just mean it's sand blasted or something but I don't know if that's all they did. Maybe coated it after?
And a lot of the build decks are fake gold plated looking.
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Final thoughts is I'm just gonna stay away from "painted looking" tanks like that red and teal one. Stick to silver options. Chromed looking ones I just have to hope aren't coated just for the sake of looking shiny, and don't leach out anything.