Kanthal twisted wire coils

[Grayem]

I'm a real newbie to vaping but before retirement I worked as an electro/mech design engineer in the fields of Aerospace and Scientific Instruments, so I have some technical knowledge.
However on the electronics side I have very little knowledge of component design.
The whole world of Mod making seems tooffer a world of possibilities to spend my time (and money) on and already absorbs a lot of my time 'researching' on the 'net.
However, I have a couple of questions concerning the topic of coil making and re-buildable atomizers.


I watched this videohttps://www.youtube.com/watch?v=pPjuJ0ZLxLI
on making twisted coils using Kanthal wire and have a couple of questions.

1. How come the twisting process doesn't destroy/denigrate the Aluminium Oxide insulation?
2. If the Aluminium Oxide insulation is something like a heat bonded outer sheath to an inner FeCrAl core, how does clamping it in a screw terminal make a good low res connection? I remember some years back having a devil's own job joining extensions to connections to thermocouples using similar wire to Kanthal.
3. The coils in the video are pressed tight, yet all of the other coil tutorials I've seen seem to emphasise air spacing, yet this guy squeezes them tight together prior to annealing the coil to keep its shape??

As far as atomisers are concerned, I'd like to hear people's views regarding the various permutations. From what I've gleaned from various sites, I'm likely to initially veer toward buying RBA's with bottom mounted coil/s, to get my eye in, before having a crack at designing my own. I doubt if I'll ever get into sub-ohm or dripping, though I do like the interchangeability drip heads offer. Any thoughts/recommendations on tanks I could buy to start off with would be much appreciated.
Thanks.....

Ooops, just realized the 'annealing' (I think) I referred to was in this vid, https://www.youtube.com/watch?v=xrvwOf13U-s
which I've already tried, but to which the 'tight coils' comment still applies.

 

[vaporsizer]

Well we're vapers, not scientists. I didn't know my kanthal had a core, i figured it was a solid alloy.
The point of the micro coil is this. It makes a strong & tidy small mass & it glows from the inside out making it the right progression for heating the liquid & then it cools off in the reverse order & preserves itself as it expands & contracts.
It also covers a larger area of wick & so it vapourizes from a larger surface area at once. It's simple logic & whilst there is a science to it, as there is in all things, most vapers wrapping their own coils are more interested in simple practicalities & reliable builds, safe ones ! Except for @Raguri who would rather produce nuclear power in the palm of his hand.

 

[pez]

Sorry......didn't understand a feeking word of that starting thread. I will take no further part in this thread.

 

[BucketMod]

Over thinking it man.
I don't know if the wire has a core.
I do know that the dude in the videos knows what he is doing, and makes great coils. Keep watching his tutorials, and you will be building coils like your first job was putting twist ties on bread bags.





Battery Grenadier

 

[Raguri]

Well we're vapers, not scientists. I didn't know my kanthal had a core, i figured it was a solid alloy.
The point of the micro coil is this. It makes a strong & tidy small mass & it glows from the inside out making it the right progression for heating the liquid & then it cools off in the reverse order & preserves itself as it expands & contracts.
It also covers a larger area of wick & so it vapourizes from a larger surface area at once. It's simple logic & whilst there is a science to it, as there is in all things, most vapers wrapping their own coils are more interested in simple practicalities & reliable builds, safe ones ! Except for @Raguri who would rather produce nuclear power in the palm of his hand.

Ahem... I use Micros tyvm. They're just 4 wrap Micros..

 

[vaporsizer]

Ahem... I use Micros tyvm. They're just 4 wrap Micros..

Like i said, we're vapers, not scientists ! I use normal micros, can't be arsed with all that twisting & fecking around.

 

[Raguri]

Like i said, we're vapers, not scientists ! I use normal micros, can't be arsed with all that twisting & fecking around.

Only reason a use Micros is they hold their shape better when.putting cotton in xD

 

[vaporsizer]

Only reason a use Micros is they hold their shape better when.putting cotton in xD

I don't know what tyvm means. I don't text ! Is it a type of sports car ?

I also thought the real reason for these coils was because they are iller than breasts !

 

[wilko]

I don't know what tyvm means. I don't text ! Is it a type of sports car ?

I also thought the real reason for these coils was because they are iller than breasts !

Wash your mouth out!!!


Breasts cannot be beaten!

Sent from my HTC One using Planet of the Vapes mobile app

 

[Grayem]

Well we're vapers, not scientists. I didn't know my kanthal had a core, i figured it was a solid alloy.
The point of the micro coil is this. It makes a strong & tidy small mass & it glows from the inside out making it the right progression for heating the liquid & then it cools off in the reverse order & preserves itself as it expands & contracts.
It also covers a larger area of wick & so it vapourizes from a larger surface area at once. It's simple logic & whilst there is a science to it, as there is in all things, most vapers wrapping their own coils are more interested in simple practicalities & reliable builds, safe ones ! Except for @Raguri who would rather produce nuclear power in the palm of his hand.

Point taken about 'practicalities'.
I'm no scientist just a very old engineer. if the wire was just solid alloy as you think, without any insulation, when you push the coils together the path of least resistance is not through the coil but but across it, basically a dead short. So therefore the outside of the wire has to have some sort of insulating properties. I wasn't being technical just curious. Anyway I phoned Kanthal and got my curiosity satisfied.
I'm after designing a mod as I got too much time on my hands and there seem to be a few problems such as dry hits, flooding and the +ve battery contact burying themselves in the rubber insulator etc. I've read a lot about, not to mention the inherent weakness of the 510 thread. Compare this to the Mister (MISTer -hybrid (Silver plated contacts) | VJ-Mods) where the thread on the atty base is M20x1 and screws directly into the tube seems as good as it gets for strength.
After that there's an idea I had put into my head about the atty being variable temperature control and porous ceramic tube wicks, but there's along way to go with that. But I'm sure it's doable in the future along with fluid supply controlled by the vacuum from inhaling.
For now I think I'll just stick to the body design and leave the rest to the eggheads.
Thanks for you reply though.