Now just hold on one cotton packin' minute here
LOL
I'm not quite sure about this just yet supe. <scratchin' noggin'>
I know I'm all about ribbin' on folks to stop kinkin' their Nextel and other wicks, and that's the truth. So don't start chucklin' it up on me. You really don't want to start compressing the middle after a good dinner tightenin' up the belt a couple of notches. No sir.
But thinkin' on it a while supe, what kind of compression are we talking about? It's pressure
across the grain.
I believe the more directional the fibers are the more capable of directional compression that a wick can handle. If true, then the directional properties are a huge
asset to control the flow rate with respect to the watts and wind (resistance) that we apply.
Example,
on the Immo I posted about yesterday and in other small bed drippers I've been doubling up the instinctive amount of cotton you and I have both been using (I use the leads as a guide, any significant bend/coil orientation is the limit). And mostly I don't wind below 28 AWG (or equiv. twisted, parallel) so that lead deflection limit is low. Yet I actually
had been going the downside (less is better) with JC because of it's directional properties. And yes, the result has been outstanding. But a bit airy supe, diffused.
Just to put things in perspective, I did find a pic of my split-wick
bunnies to give you an idea of the usual density I put in an Immo. And it's rather loose. As I said, when deflection begins
The traditional principle of limiting the cotton volume based on resistance at the coil doesn't seem to apply to JC. The Immo example contained a roughly 3/4" strand of 3/8" width (which you know is almost 1/4" thick, snipped from 1" length) divided into two bi-directional wicks in the 2.38mm coil. A total of 3/8" of cotton! The tensioned adhered flat-wire held together despite the thickness, albeit delicately inserted from two sides. It had to be lightly rolled, firmly compressed and slightly twisted to pass through. But almost double the density of what I would have considered the prudent maximum with regular cotton. What would have thoroughly clogged it, I think from past experience.
Instead, I'm seeing a density of vapor closer to some of the best cotton experiences, best builds, with a notable neutrality and richness they lacked. It took forcing the wick to a slightly higher flow rate with the coil efficiency and some compression. Just to mention here that the res. is 1.03Ω as I recall, about the lowest I've run on an Immo. All told supe through about a half dozen builds on small bed rda's like the Igo-W, Nimbus and Helios with this test so far. But no early demise of the wicks either. In fact I'm enjoying them a bit longer which is a splendid surprise.
So I'm not too sure we can't be a little more liberal with our cotton here, at least on some drippers and rebuildables. Even as the above case seems to be the upper end if not the limit. 'Nother words I really packed it dude.
Good luck.