From my understanding..
They sometimes use "Non-Resistant" wire for the legs of the coil, so that only the actual coil heats up. They weld this "NR" wire to the coil so that the legs don't heat up and burn the grommet, causing a bad taste and smell that's hard to wash away.
If you build a properly built & tensioned microcoil or regular coil, you don't have to really worry about "hot legs" burning the grommet too much anyways
Thanks M, for stating the obvious. It needs to be stated. NR wire yes can be used to reduce the risk of shorting. It is not however intended to mask the common problems resulting in shorts prevalent in most of our devices. It is caused by improperly built coils. Coils that do not hold to a correct geometric symmetry that promotes efficient electron flow. That is all.
Our benevolent producers and suppliers would have us believe by the act of omission of not telling us that this is ok. And that in part is why many of us assume it. As well the common repetition of a method that would not be used anywhere else. Anywhere! So I constantly pose the question What piece of modern electronics would you pay a nickel for that contained a hand wound coil?
(You'd be surprised how many people baffled continue in their suspension of disbelief to answer in the affirmative
before they actually think about the question.)
Symmetrical winding on a screw for example or subsequently contact (micro) coils all started to move vaping towards proper electrical symmetry. But tension winding makes machine precision possible and, using simple physics, attainable by the average person as illustrated in this photo
The fact remains that shorts are caused by asymmetry in the coil! NR leads do not, anymore than silicone grommets, eliminate shorts and the inefficient gunky wasteful vape they produce. Nor battery drain and wasted battery cycles. Nor the juice which is precious to us. Nor our time which is even more so.
The only valid purpose for NR wire is to reduce the incidence of shorting where wires are so channeled by the design that they are exposed to shorting. No other reason.
It is not the rationale for accepting a defective electrical efficiency or a substitute for adequate rebuilding knowledge.
On that note let me link to the OP's, M_DuBb716' excellent thread...
http://www.e-cigarette-forum.com/forum/clearomizers/486794-protank-microcoil-discussion.html where real technical answers can be found on how to solve most shorting through some rather simple techniques.
I thank you for your contribution M.
Happy Easter all, and good luck.
