Agreed, with one minor point, they come I think in packs of
four. That's how mine came. Unfortunately the ESV site is acting up again so I can't confirm that's the case, but in Vape Dr's video below you can see the foam bock they come in at about 2:40, with the two in the middle still there and not enough room for 3 more?
Easier to see when the lights go out at about 3:30.
OF
@OF This is how my coils came. on a foam block in a box.
I believe it came with 5, maybe 4 but you can easily put 5 coils on each side of the block and one on each end.
So 22 coils will fit on the foam block safely if you put one on each end. There are also different coils Joe was trying out.
Some coils were hotter than others (very little difference" but they have the same amounts of winds per coil (I am currently trying to make the "perfect" coil). Some coils had different thickness on the wire, but so minimal I can't tell which are which now.
I have got to the point to where I don't need to change coils. I've been using the same coil for 6 plus months.
I attribute this to the fine-coarse-fine chamber screen set up and the fine bottle cap chamber lid screen.
But once you get your coil set it should last you a year. I'm happy I can fine tune the coil to my exact specifications then I'm good for a long long time.
Speaking of chamber lid screens, I have been messing around with the chamber lid ..... yes, again... and this is my newest creation of what works best for me for the chamber lid screen.
It doesn't look much different, but i drilled out the entire inside of the lid, then shaped a semi coarse screen concave like a contact lens then kinda weaved a fine screen into the coarse on top.
Here are a few other views so you can see how deep the screen goes into the chamber lid.
I had to use a coarse then fine to cover the vapor path slits to prevent particles inside the unit.
I've been using this "dome screen" method for some time now and it works great. This way allows you to shake the SV and the extra space allows for you to mix it as if you had stirred the chamber. And I'm still running the same great low temps 310-315-325.