Think I can go up to about a week, but I have more than one on the go
so I tend to go "about" a week for each tank & re-wick......
I'll try a burn and usually get away with dry burning once, maybe twice
but it gets a bit dull tasting after that - yeah often just dry burn once
Also coz I'm using 29awg Kanthal, if I take the piss & quite crappy coil
then when I pull out the old cotton the coil gets quite fucked anyway
fuck me, a bit of Kanthal is like less than a penny, so I don't mess around too much
if I pull the wick out OK & coils burns off easy I'll keep it & give it a go
any grief - fuck it I'll make a new one, about same time to burn off nicely or wind/fit a new one
The flavour starts to mute a bit say by about day 5
if I take the piss past say 10 days it is like closing the air right shut
by the time you open it up there is crud in chimney & in juice etc....
(so don't take the piss too much or more extra cleaning)
Also it depends on your juice - some clog up coils quicker than others
& how much you chain it or amount of juice you consume etc.....
but like how long is a piece of string, so the answers will vary a bit
I'd say rewick 5~7 days