I found the 16g or 1.63mm the perfect fit. It fits tight enough that it does not wiggle around inside the coil which would be TOO loose and not vape very well, and not too tight that the ends flair out at the end which would mean the wicking thru the coil would be too compressed and inhibiting full juice soaking. With the 16g needle the wick is straight from one end to the other with no compression, just like a screw thru matching nut. Just my 2cents.
Here's the only way I can answer that. There is no prescribed "perfect" for the contact between say 1/16" (.0625", 1.5875mm) and say the max slot on most clearos of nominally .07" (1.778mm). Every say .05 mm step would offer a different degree of deflection (compression into the wick once saturated). The general rule of thumb would be the more deflection the more of the wire itself that is contacting the wick, e.g. more vaporization area. But it doesn't necessarily hold true for every juice!
In other words, it might be a perfect wind in each case…but not necessarily bring out the best in your favorite blend. Interesting, huh?
Each flavor we use is slightly different. For example, one might be more VG, or have a flavoring that is more responsive to heat like tobacco or vanilla. Still others like fruity flavors the opposite. And issue like resistance, deflection (flow), power come into play.
So I guess the answer here is that the winds we choose are like the kitchen tools. Some are really ideal for those delicate scrambled eggs. Others essential for our favorite sizzling steak. And then you have that great all-around sauce pan thats great for everything.
I hear it too often that it's a matter of personal preference. Cool. That's not the issue though, or the question we're all really trying to answer. It's temperature. Then next, what's the best tool to get there? If you have standard baseline of performance it's easy then to make comparisons.
The important thing here is be a craftsman
of the tool I concluded, if ours weren't producing what we expected. And that's why I strove to answer the question — What is a proper electrical coil? Then to find a simple means, the techniques, to build them repeatedly, consistently and without the huffing and puffing. If we have to guess and spend too much time making one, then we spend less time actually using it. And that's a shame. I love vaping but rebuilding while engaging is not the be-all-end-all for me.
My 2¢ gang. Savor the flavor.
Good luck.
