Welcome to the wonderful world of trying to get a SS mesh wick properly oxidized!!!
There is a fine line when oxidizing a wick....needs to be enough to where the coil won't short against mesh........too much and the "oxidized layer" on the mesh becomes kinda brittle and prone to being easily disturbed by the coil rubbing against it or even a hot burning coil sorta burning through to the conductive steel again.
How do we find this happy medium you may ask. That's hard answer easily as there are tons of different methods, ways, procedures, thoughts, magic....etc that many times it just takes trying them all until you get one that works right and works for you.
I will say that with simply more practice it gets better but I will try to elaborate on some things that I have found in my time that have helped:
I'm sure, like myself and many, you have watched some youtube videos of these guys oxidizing a wick real quick and just throwing on a coil and bing boom bang they fire up this near perfect glowing coil, give it a couple of adjustments and they are off to the races. Then you think, man that's simple and you try it......aaaaaand (fart noise) no go. sound about right?
First off these guys have done hundreds maybe thousands and have gotten really good at it........but how?
Like I said at the start, it first comes down to getting the wick oxidized just right. From my experience it is best to get yer wick measured and rolled up nice and tight and to the diameter that you want/need. Then you wanna hit it with a torch or some other flame. The idea here is to get the wick hot enough for the metal to react with the air and build a coating of oxidation that will sorta encase the stainless steel in a non-conductive layer. How do we know it's good? Also a hard question but here's what I do: I will lightly heat up the wick on one side until I see it start to change color, then do the other side. The wick will go form SS silver, to kinda a blue-ish, then start getting to a dark gold or brown-ish. I keep hitting the torching as evenly as possible stopping while seeing these different color changes. Once it gets to that dark kinda brown I know I'm pretty much there. If you get the SS super red glowing hot then the surface will turn an ashy black, when this happens you enter the area of a possible over-oxidized wick that has to be treated much more delicately and can short out on ya.
So, my best performing wicks have been about 3 or so light torchings getting the surface slowly built up to that dark brown color. Then, to add another protective layer and a touch of rigidity to the wick, I will put a few drops of juice on the wick and light it on fire and let it burn out. This will sorta leave a burned juice residue on the wick that will help keep in from shorting (this also happens during wick/coil break-in and will start performing even better). I do the "juice fire" 2 maybe 3 times.
Lets say you try all this stuff and yer starting to get fed up with it and just wanna vape. This cotton wrapped SS wick method will shield the coil from the wick while wrapping and you can usually have just about any level of oxidized wick up and running so easily that you will laugh
Mesh/Cotton hybrid wick Bluegrasslover's method - YouTube
That method is really easy, helps wicking, and to me tastes pretty great but it does have it's potential drawbacks. The cotton must be wet at all times. If running the cotton method you will not be able to do a "dry-burn" to check yer coils. Not really too bad of a deal as with the cotton in there you really don't have to worry about shorts and don't necessarily need to dry burn anyways. If you do happen to run to dry tho, it has a chance of burning the cotton and giving a bad taste, be aware of yer juice level all the time tho and you can keep this from happening.
So, hope this makes some sense and hope you can get it figured out. It is definitely worth it.
YEAH, THAT ^
I had my first one up and running with no problems using this method. I had my 2nd one up and running with no problems as well. I just followed those directions and it was fine from the first one. I have not had to recoil yet. You can tell when it needs refilling by the harsh hit you get, then I just drop a drop of juice on the wick and fill it back up.
I have ordered the clear tube so even that won't be a problem soon.