I dunno if there's a guide or not.
www.steam-engine.org/coil.aspIs a really useful site, coil calculator, ohms law calculator etc
I believe there's also a steam engine android app too.
To find the number of wraps you need put in the target resistance you want, put in the wire diameter/thickness and the inner diameter for the coil, the results box will show you the number of wraps needed for your coil.
I try and keep it between 5 or 8 wraps per coil so if it's telling you that you want 12 wraps or something for the resistance you're after then just change the wire thickness setting until you find the right range.
I would recommend you only use batteries with a 20A or higher continuous discharge rating.
Samsung 25r
LG-HE4
LG-HG2
Sony VTC4 or VTC5
They're all good batteries.
As long as you stay above 0.2ohms on any of those batteries you're in the safe zone with a mech mod or a regulated mod in wattage mode with a single battery.
I've no idea what style of vape you like so recommending wire gauges is a little awkward.
I tend to like an airy lung hit and build single coil builds at somewhere between 0.2 and 0.7ohms depending on the atty, the gauges i use most are 26,24 or 22AWG Kanthal A1, if you're wanting a higher resistance for a mouth to lung style of vape you'll want a thinner gauge like 28,29 maybe even 30 or 32AWG.
Remember if you're doing a dual coil build your finished resistance will be half the resistance of each single coil.
E.G. if you make 2 x 1ohm coils the resistance of your build will be 0.5ohms
Both coils need to be the same number of wraps, same wire etc otherwise one coil will heat up faster than the other.
I would suggest you get a resistance tester to check the build before you use it for shorts, if your resistance reading is jumping about or you get no reading at all your coil is shorting somewhere.
Check your resistance with the chimney on or the RDA barrel on so you know the coil isn't shorting against the inside of the chimney or barrel.
Dry fire your coils before you wick them just pulse them until they glow to make sure there are no hotspots or hot legs and your coils are glowing evenly.
Check the post screws are tightened again after dry firing, the screws can back out sometimes when you dry fire.
Let em cool off and you're ready to wick.
All sounds rather baffling and confusing no doubt, i know it did for me but honestly it just becomes second nature after a few builds.
Here's another tip, go to youtube and search for whatever atty you're building on and just add the word build onto the end of the search, 9 times out of 10 someone has put up a video of them doing a build on that particular atty.
