QUOTE(polaris bob @ Jan 30 2007, 06:14 PM)

Keep in mind that they are not meant to be re-filled and it just might also be illegal to do so.
With that out of the way, those little adapters do work, but as stated before, they will not fully fill the smaller bottle. And as the big tank gets lower and lower on gas the less they fill the smaller tank. If you can live with that inconvenience then go for it. Have you looked into getting one of those adapters that will let you run the buddy heater off of a 20 lb'er??
Definitely the way to go with the buddy heater. I actually got a smaller tank, (15#?) with a patio grill. It's a smaller tank and a little more convenient, but either way, the adapter is definitely a better way to go.