I might have to try supagas for a refill / exchange.
I'm not sure Norm if they would refill the BOC bottles ,I know with Propane they take any old bottle and exchange it for a full one ,I usually just buy second hand oxy acetylene bottles that are usable and then when they are empty throw them out.
There is a seller saying his bottles are not stamped so no problem refilling them but it does make you wonder if someone ground off the BOC on the bottle would they exchange them ,I think they would take an unmarked bottle.
