Question about rebuilt coils and heat with a TC mod.

[Imfallen_Angel]

Hi, I'm new to the forum but have been in the world of vaping for about 8 years now, due to it being the only thing that got my wife to quit, and I do it for enjoyment.

Short version, I'm been rebuilding my coils for a few months now and it's been a bit of a hobby, but also found that we were going through quite a bit of atomizers with bad ones on a fairly regular basis and it was getting expensive. We've got Melo 2 tanks, using various coils from Eleaf, then switched to Vaporesso ceramic, which are great/easy to rebuild, but these coils are compatible with a lot of tanks from various makes.

My coils have been quite fine and with practice, most I rebuild have the desired setup, hitting the 0.2 Ohm on Nickel 200 for Temp. control (TC). No spitting or popping, they work extremely well, even better than the pre-built ones.

My question: even though I measure everything very well, I find that between my rebuilds, I can get some that (using the TC) will be giving a good warm vape at 420-460F, while others I need to go in the 560(give or take) to have the same warmth. Any idea what the reason might be?

I've done a lot of reading and searches, but I can't find anything about this anywhere, so I'm hoping that someone might have an explanation...

 

[IMFire3605]

Hi, I'm new to the forum but have been in the world of vaping for about 8 years now, due to it being the only thing that got my wife to quit, and I do it for enjoyment.

Short version, I'm been rebuilding my coils for a few months now and it's been a bit of a hobby, but also found that we were going through quite a bit of atomizers with bad ones on a fairly regular basis and it was getting expensive. We've got Melo 2 tanks, using various coils from Eleaf, then switched to Vaporesso ceramic, which are great/easy to rebuild, but these coils are compatible with a lot of tanks from various makes.

My coils have been quite fine and with practice, most I rebuild have the desired setup, hitting the 0.2 Ohm on Nickel 200 for Temp. control (TC). No spitting or popping, they work extremely well, even better than the pre-built ones.

My question: even though I measure everything very well, I find that between my rebuilds, I can get some that (using the TC) will be giving a good warm vape at 420-460F, while others I need to go in the 560(give or take) to have the same warmth. Any idea what the reason might be?

I've done a lot of reading and searches, but I can't find anything about this anywhere, so I'm hoping that someone might have an explanation...

I've found that it is best to use spaced spiral coils for Ni200 TC coils, any part of the coil makes contact or is closer to the next wrap will cause hot spots, this includes contact micro and macro coils. I generally use a #14 Machinist Screw to wrap my Nickel coils on, then remove it after wires are trapped and trimmed, wick it, do not dry fire, then prime and fire away, no issues, the threads of the screws keep the wraps equally apart.

 

[suprtrkr]

Yeah, I tend to agree. Nickel is finicky, and it likes spaced coils.

 

[Imfallen_Angel]

As my rebuilds are vertical, I'm thinking that possibly as I get it in the casing, some coil might end up pressed?

I'll have to try with using a screw... darn, just bought a jig as I was finding using a large nail a bit hard, especially with the 30 gauge I'm trying, the silly wire refuses to wrap tightly easily. Even with the jig I find myself holding the tip of the wire with my teeth to provide proper tension.