Ohms law... you cannot get 60 watts or better out of a single 18650 running a .3 Ohm build.
That said, don't build to achieve a certain wattage. Build to get to a comfortable level of heat and vapor. I find I'm happiest around a heat flux of .25 w/mm^2. To that end, I build a simple 6 or 7 wrap, KA1, 24 AWG, 3 mm set of contact coils that come in around .28. Starts around .25 w/mm^2 and when it starts to get cool, the batteries down to around 3.4 V...
To the OP, if any of that sounded like gibberish, you're needing a bit more study before setting up a mech.
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