Milkbread

I tried what you mentioned, giving it a tight pull of cotton across the coils. Wicks well with the ends thinned out. However, the extremely fast rise in temp detected is still the same. I have to run my setup at 220 degC instead of 200 now in order to get a decent vape. I did note that when the temp hits, the wattage running is higher than before. I attribute that to the better wicking keeping the cotton wet and it's a great tip from you. I am rather concerned of choking the cotton in the coils. When I ran kanthal claptons previously, I had to make the cotton looser in order to reduce spitting. At least it's still working, although I'm still trying to get to the bottom of this and I feel that it's still the wire/coil. I'll try my best to get some other wire, especially SS430 try out.

Actually I've gone through more than 10 different type of coils with this issue while trying to find the perfect one for the engine nano over the last 3 weeks. I would say that my wicking is safe as I use Muji organic cotton, each piece of cotton cut into 4 strips and the top and bottom layers removed. The wick thickness should be quite consistent. Length has always been cut so the ends are barely reaching the deck base, fully fluffed. I have to do this if not the deck will flood when refilling. I suspect that the properties of this SS wire is changing after it turns dark gray based on my observations. On the first new coiling, if I don't glow it, the temp won't rise so fast. But if I glow it completely, it will. I suppose it has to do with the wire I get from my local supplier. Will have to find an alternate source and verify. In the mean time, all I can do is try not to glow the coil, although it's hard to get it really clean if I don't. I wonder if anyone else is experiencing this phenomenon

I have built my usual 2x26awg twisted, 3mm ID, 7 wraps spaced, SS316L coil yesterday, and it came out to about 0.34 ohms. The coil was only gently heated (no glow) to check for evenness. I then locked in the resistance @ 0.34 ohms to ensure stability. (I hate the very slight fluctuations of refinement) My set up is DJaquith's SS316L profile, 40W, no preheat, temp set at 200 degC. I was happily vaping it with the Engine Nano. So after 6 tanks or so, this afternoon I felt that the cotton wasn't wicking very well anymore. I took it apart, removed the cotton and dry burned it. I used power mode 10W and let it glow, followed by a quick rinse in tap water. I also brushed it with a pipe cleaner to remove all the gunk. Final rinse was done and the coil was dry burned at 10W again till glowing and dry. The coil settled at a dark grayish colour after cooling down. After rewicking etc, I took a vape and I noticed that it hit my temp setting of 200 degC way faster than this morning. Do any of you TC SS coil users experience this as well? Is there a better way of completely cleaning the coil? Before cleaning the coil After cleaning the coil

Thank you Chunkybutt and Giz for your help. It has really helped to stabilize my SS TC vaping experience! Looks like i'll have to run case analyzer a 3rd time when batteries are low. It crashed and reported a microsoft.net error when I was doing some work during the case cooldown after charging. By the way, are those thermal values automatically propagated or do I have to input them myself?

I read an old thread about mod resistance and James suggested using the thickest copper wire possible and short the atomizer and get a reading from atomizer analyzer. I did that and the reading was 0.010 ohms. I took 80% of that and set 0.008 ohms under mod resistance. Would setting it based on the cold and raw resistance be more accurate? I ran case analyzer yesterday, and it didn't seem to do anything at all. Nothing was generated, and the thermal values for my case remained the same. I have no idea what is the expected outcome of it. I will run it again later when my batteries are lower. Yes I have increased it to 50W and it's hitting the set temp now.

Tried using the puff function on device monitor for 2 seconds, 4 hits from cold. Looks like the performance is back to par, not even hitting my set temp of 400F. Live ohms are looking good as well.

After leaving it for an hour or so on atomizer analyzer, the raw ohms reading is more or less steady at 0.400, with very slight fluctuations to 0.398, 0.399 and 0.401. Most of the 1 sec polls are dead at 0.400. I am curious as to why the cold ohms read as 0.37 when raw ohms is showing 0.40, especially when the coil and mod is cold. The mod is also displaying 0.37 ohms. I also tried disconnecting for 30 minutes, and then reconnected atomizer analyzer. It is still showing 0.37 cold ohms and 0.40 raw ohms. The mod is still displaying 0.37 ohms. Naturally I felt that this was something wrong off, and I tried overriding the ohms. I set it at 0.40 ohms, and then unlocked it. Single pulse on the fire button and now the mod is showing 0.40 ohms. Ran atomizer analyzer again and now the cold ohms is 0.40 ohms, but the raw ohms has dropped to 0.395 ohms. This is interesting. After closing atomizer analyzer and waiting 10 minutes for the coil to cool, the moment I open atomizer analyzer I get 0.390 ohms. I have set this for raw ohms and shall try vaping. So far the vape feeling is back to how I set it. Will report back again.

Thanks for the advise. As my current build has been used for about 3 days, I'm rebuilding it identically and will report the results. I'll also run a check on the OBS Engine Nano on TC for more info if people are experiencing wonky connections. I'm starting to think it might be this tank itself. Currently have it sitting with just the deck and coil on the mod, and I have already seen the atomizer analyzer fluctuate from 0.391 to 0.398. Everything is dead tight. Here's hoping refinement can work it's magic and reduce the fluctuations? Does refinement work all the time, as in always refining as long as the tank is connected? Even when in sleep/standby mode?

Thanks for the reply! I'll try keeping the USB connected prior to changing batteries. However, I now noticed something which I thought was fixed when I did a hard reboot earlier today. I am experiencing the same issue of momentary fire and temp display shows 200+F when cold. This is when the device goes into standby and wakes up from it. Since my last post, I have left the tank/mod untouched. Just vaped it and totally cold again. Had to do the new coil thing again to get it to work. What's wrong with the dna250?

After chain vaping for more than 10 hits, I have noticed that it is only the temp reading on device monitor that is not the same prior to changing out fresh batteries. I changed it out when it had 50% left, so it's not a battery sag issue. I feel that I am still getting almost the same vape experience, just that right after changing the batteries the vape was cold. I had to unscrew the tank and make the mod register a new coil before it could work normally. If anyone's interested, I'm using the following: OBS engine nano SS316 26awg x2 twisted 3mm ID 9 wraps spaced coil ohms 0.36 (ohms unlocked) Djaquith's SS316 v3.5 profile 70W preheat, 5 punch @ 1 sec, 40W power Temp set at 400F Edit 1: So after chain vaping, my tank is nearly empty. I topped it up and I found something more interesting. The vape became warmer even though device monitor is only showing the temp at 330F peak. After another 10 or so 2 seconds hits, it's back to the same old vape experience. Very interesting. Considering that the OBS engine nano doesn't use a pressurized filling, it is interesting that the cotton is cooling the coil so much right after filling. Edit 2: After another 10 hits or so of chain vaping, everything showing on device monitor is back to normal, like before I changed my batteries. I guess that this is the power of the DNA coil refinement? TLDR: My only issue right now is the high temp reading immediately after changing out batteries, resulting in a cold vape which doesn't seem normal. I hope someone can help shed some light on this. Many thanks in advance!

Hi everyone, I just hopped on the DNA bandwagon recently and am having a slight issue with my Therion 166. After I have set up everything, TC works great with SS316L. However, I have noticed that when I change out my batteries to a new set, the temp control becomes unlocked and my vape in TC seems totally different as compared to just before changing out the batteries. When I just touch the power button, the temp display usually shows <100F or just slightly more than 100F. After changing out the batteries, the instant I touch the power button, the temp display is 200+F. Very weird. For my usual vape, it takes only 2 seconds to reach 400F, now it takes about 3.5 seconds. I have tried a hard reboot, and re-uploading the device settings, but it is still wonky. Does changing out batteries to charge in an external charger cause such an issue? I'm using version 1.2 SP5. Has anyone encountered this problem?