I swear this drill bit says 1/8th which would be over 3mm.
Depends though if you're using an insulator you could use a smaller drill bit that matches the internal diameter of the insulator. Roll your coil as described and then slip a pre-made wick through.,
Should work the same. I think it's so much easier to get nice and uniform coils with perfect spacing this way as well. Your wire will got a little lose around the drill but but no worries you can tighten it up when you do the top screw, just give it a little tug.
Makes sense, the iHy's wick hole is 3 (or was it 3.5, ugh need to sleep soon) so 1/8" would make sense.
Guessing the Vaper has a smaller wick hole.
Wish I can play with one of the Vaper's, the Petar K method looks even easier on his positive/negative setup.
Edit: LOL Faceless to the rescue! But I was looking for the wick hole size of the Vaper!
Sure, I can make a box 