Wow you had it happen twice? I can say that i only had 3 feet of the wire that it happened to me with so it's long gone. I've been using wire from my current spool ever since and nothing like that's happened again. I'd say bad batch of wire is a maybe.
Cotton flames!
- Thread starter Treebeard
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Its not the wire so to speak even tho it is the wire that cooked you just over did it with the dry burn any difference in the way the coil is wrapped ie all snug together with a gap in the middle can make a hot spot. any coil wire can and will do it if dry burned too long we have all had coils on premade attys go bad right ? most very time it is the coil has popped same can happen with rba's I think with the RBA.s the coils we make are just made with better materials so last longer. Like a lightbulb tho they will and do die eventually.
Nichrome just seems to be more prone to shorting between wraps than Kanthal. I've melted three 26g micros. Two were during dryburn after being used for a while. One was the initial fire up and you could see it short straight across the wraps for a very brief second. To lessen the chance of it happening again, I pulse in very short bursts on firing a new coil. When dryburning, a couple of pulses, then ream out the coil with tweezers, then normal dryburn. Seems to have stopped the problem.
Alright that's probably what mine was it was one of my first micros and as such not near as tight as everything there after.
Good theories and advice both. But, I gotta tell ya, I use a tool to wrap coils on an they come out tight as a drum. I got into the habit of pulsing the dry burn back when I was using AGAs (et.al.) and mesh and I've carried it over when I switched to RDAs for the Reos. I still check for hot spots on the micros but never see any.
So, over doing the dry burn was definitely not the prob. These two coils were relatively new and they folded/melted as soon as I pressed the fire button to do the initial pulse. It was oddly fascinating to watch it happen. I had never popped nor melted a coil in almost 3 yrs of rebuilding attys before this.
I'm with Dturp on this one. I think its a bad batch. This was my first experience with Nichrome and probably my last. It's a pity cause for the short time it did work, I liked it.
Maybe see if you can pick up a small thing of it from a local shop if you have one. At least that would prove or disprove a bad batch theory. But three times is pretty crazy and if not for wire I'm clueless as to what could've caused it on yours.
I've been vaping 26 nichrome for months, and not a single such experience.
Batch.
Batch.
I might just do that.- Status
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