Mine was just a little bit sharp around the hole's edge. I did have to scrape/whittle a little with the edge of a file. I was not that gentle...
I'm having a helluva time learning the right amount of wicking material to use. I watched Todd's and Damien's vids several times before starting, and then rewatched them again when I first tried building mine. Getting the coils mounted is indeed a cinch, but they are NOT kidding about not skimping on the cotton.
My issue seems to be that when I screw down the chimney over the coils and wicks, it's pulling the cotton around. I haven't figured out what to do about that yet. I've successfully vaped one whole tank, but of course, that was after wasting a load of liquid. And it DOES vape really, REALLY well. If it didn't, I'd have given up by now.
I don't know if that one good tank was due to sheer luck or the amount of cotton I finally wound up with. I tried to replicate it exactly but it still wet itself, despite having the air holes completely closed and tilting while filling with a syringe.
So, more photos of successful (hell, even UNsuccessful) builds would be hugely appreciated. I'll eventually stumble across the "trick" but I'd like to minimize juice wastage.
ill tear it down and do pictures a little later today
the vape quality makes up for the stream of curses I feel compelled to utter when it's time for a refill (which is pretty quick -- this puppy drinks juice at 0.7 ohms).
why not wind your coils to end up with a higher resistance like 1.4Ω total or something, so that your juice usage is much less?
Yeah...I like the vape better at. 7 to. 8 myself on this. Tried higher resistance and it was OK but came back to. 7. The filling on this is a pain....pulling and loading a syringe is the biggest pain especially since top filling a Kayfun is such a snap. But...every tank has got its quirks...Got mine in yesterday and have been loving it -- finally have a tank with great airflow! Flavor has been top-notch as well. Flooded it on my first fill to the point of major leakage, so re-read the tips on filling and have been leak free since.
The only issue that has been a problem is that freaking small set screw for the fill hole. Major pain in the .... dealing with that. But, while I initially was not going to get the A7 due to that since I knew just looking at it that it would be a challenge for my old hands, I'm glad I went ahead and got it -- the vape quality makes up for the stream of curses I feel compelled to utter when it's time for a refill (which is pretty quick -- this puppy drinks juice at 0.7 ohms).
why is everyone still using cotton anyways? - I thought it had been pretty well decided on this forum that the rayon batting called cellucotton was superior to cotton in taste, wicking, and making the coils last forever and keeping them clean.