ignore it.

If I am not mistaken I never said the number o wraps. Shame on me. It have 8 wraps (7 complete wraps and two half wraps at the end).

MitchL wrote:

3MM, 8 wraps, spaced. started at 0.76 ohms but now is 0.83 ohms.

Yeah... Sounds like you're getting close. At ~415°F new/dry cotton will show a slight yellow discoloration. But, shouldn't char or scortch. You can also tell you have it set correctly when in use if the mod regulates down once your wicking starts to dry out. Then you got the TCR nailed... ;)

I think what gets overlooked and why the TCR needs to be adjusted. Is the fact that stock TCR values are just an averaging over a large temp range. SS has a non-lineir relationship to resistance and temperature. Meaning it doesn't increase in resistance in a uniform mannor in proportion to the temperature of the wire. Fine tuning the TCR will bring the accuracy of the chips ability to read resistance changes within the ranges of temps we vape.

http://www.steam-engine.org/coil.asp?mat=ss316l&r=0.76&hfnw=30&awg=26&id=3
See the wattage setting next to heat flux. around 170-180 is good.

You resistance is a little high, check post screws are tight.

resistance of hot coil is higher than cool. I never lock the resistance. I even reattach when the coil is hot. Never had a problem.

Nah, I don't wanna

Depends on the mod/chip. Evolv always recommended not to lock the cold resistance. Also, I never locked my JoyeTech devices and never have an issue.

I haven't noticed the indicated temperature before. Thks!

I tighted the screws. Resistence changed to 0.70 ohms. Oh... I forgot to mention something. I am using this heatsink. Without the heatsink the resistence is 0.76. So something is wrong?

I alway thought that, "why should I lock the resistence if the resistence will keep changing? So with the resistence locked the device will give a TC that is inaccurate, right?"