Getting a bit worried about Building

[Spencer87]

So, I am vaping.... And started getting in to Building.... I tried to Build a quad coil on my new setup but its really hard to get four wires through the two holes in the middle post.... anyways, I ended up only getting to 3 coils. But... I built a dual coil on my other RBA, and it is good, But when I dry burn it, and even chain vape it... it feels like the battery gets a bit hot. I use MVP 2.0 as Ohms meter, and apparently I am in an okay setting based on my battery. 0.4 ohms, Efest 35 amp Battery, Nemy clone.
But I am worried about the whole turning my nemy in to a pipe bomb thing. If I am vaping, and it blows up.. Im kinda dead....

And I like living.
So I wonder about Shorts. Some of My coils are not the best build... Little bit overlap, or something.

I usually fiddle so it looks like the heat starts at the middle , and goes out... But I was trying it, one of my coils takes longer to Heat up....

Am I in Any danger of getting killed by an electronic cigarette blowing up or something?

And Also, the Amp thing, With the low ohms, Does it matter, if the battery is getting weak?

 

[bm2112]

Batteries get hotter when they're being discharged at a high rate. If your button is getting hot, I wouldn't worry, as the button has the least resistance in the mod. If the button is scorching hot, then you have a short somewhere. If your actual mod tube gets hot, you have a short somewhere. If I were you, I would take apart the mod and clean it with rubbing alcohol. Make sure all the connections are tight when you put it back together.

If one of your coils takes longer to heat up, its because it has a higher resistance. Could be caused by slightly longer legs or the wraps aren't close enough. Try to make sure none of the wraps are overlapping.

Its good that you're concerned and cautious, but don't worry. I have the same eFest, which only has a 20 amp continuous and a 35 amp pulse, and I use it with a .2 ohm build. You should have a good deal of forewarning before a battery would vent. Everyone who has had a battery explode on them was using dangerous hardware or misusing batteries.

 

[Baditude]

As bm2112 cautioned, your purple Efest 35 amp battery is actually a re-wrapped 20 amp continuous LG-18650HE2 battery, so never build coils with an overall resistance lower than 0.3 ohms.

Since you are so new to rebuilding coils, instead of getting fancy with quad coil builds, start out simple with single or dual coil builds. This is a learned skill. The more coils that you build, the better you'll get. You'll get far better results the simpler you build in the beginning. No need to make it more complicated than it needs to be in the beginning.

Once you become proficient with the simpler coil builds, THEN try some fancy stuff. By proficient, I mean repeatedly consistant, tightly-wound microcoils whose loops do not overlap which glow evenly from inside out, and dual coils which glow simultaneously (and not one earlier than the other). Dual microcoils must be exact identical twins with the same number of loops of the same diameter, with no gaps, and of the same measured resistance.



I've been using the following Coil Toy Calculator to assist my coil building. Plug in all the information and you get a visualization of what your coil(s) will look like when finished.

I build only down to 0.6 ohm dual microcoils. I use Sony VTC4 30 amp batteries in my mechs. My batteries never get warm. My mod or switch never get warm. Only the atomizer gets warm to touch. I never push my batteries more than 80% of their amp capacity. Safety is always my number one priority.

Everyone should be cautious when vaping sub-ohm rebuildables. IMR batteries are better and safer than ICR batteries (which could explode when they went into thermal runaway). But safer-chemistry batteries can still vent gas hot enough to cause second degree burns or cause fires.

 

[Vapocalyptic]

As bm2112 cautioned, your purple Efest 35 amp battery is actually a re-wrapped 20 amp continuous LG-18650HE2 battery, so never build coils with an overall resistance lower than 0.3 ohms.

Since you are so new to rebuilding coils, instead of getting fancy with quad coil builds, start out simple with single or dual coil builds. This is a learned skill. The more coils that you build, the better you'll get. You'll get far better results the simpler you build in the beginning.

Once you become proficient with the simpler coil builds, THEN try some fancy stuff. By proficient, I mean repeatedly consistant, tightly-wound microcoils whose loops do not overlap which glow evenly from inside out, and dual coils which glow simultaneously (and not one earlier than the other). Dual coils must be exact identical twins with the same number of loops of the same diameter, with no gaps, and the same resistance.

View attachment 361727View attachment 361728View attachment 361726

I've been using the following Coil Toy Calculator to assist my coil building. Plug in all the information and you get a visualization of what your coil(s) will look like when finished.

I build only down to 0.6 ohm dual microcoils. I use Sony VTC4 30 amp batteries in my mechs. My batteries never get warm. My mod or switch never get warm. Only the atomizer gets warm to touch. I never push my batteries. Safety is always my number one priority.

Man those are nice looking coils. What gauge do you use and how do you get them so uniform? Do you torch em? I do some decent builds of all kinds but my wraps aren't quite as tight. Those are seriously awesome!

 

[Vapocalyptic]

that was pre fire and compress but it's the only pic I have. I'm wondering if there is a way to get them nice and tight without firing the mod. When I do that they usually get a little uneven, but could be i fire too long or my tweezers slip. Wish I had a better picture lol.

 

[bm2112]

I picked up a Coil Winding Gizmo from Michael's for $10. It makes perfect coils and you can wrap them in seconds.

 

[Baditude]

Man those are nice looking coils. What gauge do you use and how do you get them so uniform? Do you torch em? I do some decent builds of all kinds but my wraps aren't quite as tight. Those are seriously awesome!

I wrap the loops tightly around a precision screwdriver. I use my fingernails to compress the loops together while still on the screwdriver.

I then remove the coil from the screwdriver and use a tweezer to compress the coils further and anneal them with a microtorch to reduce the memory (springiness) of the wire.

I then put the coil back on the screwdriver and attach the coil on my atty. I'll move the coil around while the screwdriver is in the coil to position the coil where I want it before tightening the post screws.

I then remove the screwdriver and check the resistance on my ohm reader. If it has the resistance I'm shooting for, I then pulse the coils until they glow, release the fire button, and again re-compress the coils with the tweezers. Repeat as needed.

Practice makes perfect.
___

Vapocalyptic, it may only be the angle of your second pic, but the coils look like they are touching each other. If they are touching, this can cause a short.

 

[Vapocalyptic]

Seems like exactly what I do, minus using annealing. Gotta get a mini torch, these Damn lighters don't cut it. And yes that was just after I got everything in. I eventually got it the way I wanted but it ate way too much juice.

 

[Spencer87]

So for quad


How do you get all the legs in through that hole in the post in the center. Do they need to go through the post or Just in one hole?

 

[Baditude]

So for quad


How do you get all the legs in through that hole in the post in the center. Do they need to go through the post or Just in one hole?

Each end of the wire coil must go into a positive and negative post. I don't believe you ever said what RDA you were using. Some RDA posts may not allow four coils, or have post holes too small to fit four wires, especially if you are using thicker wire. You may be limited to just building dual coils, or using finer wire.

 

[TheJakeBailey]

So for quad


How do you get all the legs in through that hole in the post in the center. Do they need to go through the post or Just in one hole?

Depends on the Atty that you are using. Some, like the 454 big block are designed for quads. Others have large enough holes in the posts that you can rig up a quad in them. Also depends what size wire you are using. Baditude is giving you solid advice. (as usual) The more coils you thrown into one atty, the more chances to screw it up, in a multitude of different ways. I would focus on a single, then a dual. Once you nail those, you can start playing around with fancy stuff. In my opinion, the dual coil is almost always the way to go anyway. good luck!

 

[TheJakeBailey]

Each end of the wire coil must go into a positive and negative post. I don't believe you ever said what RDA you were using. Some RDA posts may not allow four coils, or have post holes too small to fit four wires, especially if you are using thicker wire.

Beat me to it!

 

[69CamaroSS]

Baditude is absolutely THE man on this (and many other vaping) subjects. I'd bet that he's helped more people on here than anyone. Listen to him and read his blog! There's very little that he hasn't already covered for you but for the sake of safety (and keeping your mandible!) I'm compelled to STRONGLY urge you and anyone else that builds their own coils to get one of these for about $15-$20.

It measures ohms to the hundredths place and there's a considerable difference between 0.20 and 0.29 ohms....especially when delving down into the sub-range! Example: Let's say that you build a coil that measures (on your MVP) .2 Ohm, you don't know if you're actually running .20 or .29 Ohm! With a fully charged battery at 4.2V, are you pushing 14.48A at 60.82W (.29 Ohm) OR are you pushing 21A at 88W (.20 Ohm)! Big difference!! Be sure, be safe and Vape On

 

[tayone415]

So, I am Vaping.... And started getting in to Building.... I tried to Build a quad coil on my new setup but its really hard to get four wires through the two holes in the middle post.... anyways, I ended up only getting to 3 coils. But... I built a dual coil on my other RBA, and it is good, But when I dry burn it, and even chain vape it... it feels like the battery gets a bit hot. I use MVP 2.0 as Ohms meter, and apparently I am in an okay setting based on my battery. 0.4 ohms, Efest 35 amp Battery, Nemy clone.
But I am worried about the whole turning my nemy in to a pipe bomb thing. If I am vaping, and it blows up.. Im kinda dead....

And I like living.
So I wonder about Shorts. Some of My coils are not the best build... Little bit overlap, or something.

I usually fiddle so it looks like the heat starts at the middle , and goes out... But I was trying it, one of my coils takes longer to Heat up....

Am I in Any danger of getting killed by an electronic cigarette blowing up or something?

And Also, the Amp thing, With the low ohms, Does it matter, if the battery is getting weak?

Coils should never overlap and never touch anything except your wick and juice and it does matter if your battery
is getting weak.

So for quad


How do you get all the legs in through that hole in the post in the center. Do they need to go through the post or Just in one hole?

Quad coils are going to make your rda and your mod hot, and it will kill your battery a lot quicker. There's really only a few ways to do quad coils to get it to fit through the positive post....

1. Use thinner wire
2. Make 2 sleeper builds. Only 2 wires running through the positive post, but it's a harder to do for a beginner and the first few times, but may need thinner wire still.
3. There's a risk involved but drilling out the center post, but you need a drill press or a shop willing to do it and knows what they're doing.


OR YOU CAN BUY A CHEAP DRIPPER MADE FOR QUADS IE: CERTAIN IGOs