Hi
@Rob I'm really into having a stash of "bits" and being as cost effective as possible. I did use to get the cotton and do my own years ago on an old Ego style tank in the days when it was mainly Hangsen liquids...Wow.. it seems such a long time ago now....there wasn't any wire involved back then though.. it was just a case of rolling it between thumb and forefinger and threading it into the tank as far as i remember.
As an aside i lived in Hull at the time and there wasn't a single vape shop in the town and i had to drive to Bridlington to buy juice from a shop. I bet theres a dozen shops there now..