One Pound Propane Re fill Adapter

I freeze the small disposable when empty. After a few yours in the freezer it's ready. Wear leather gloves and eye protection. Perform this outside. When refilling the ice on the side of the small container will slowly disappear. You can also hear the transfer in progress. When full turn off the big tank. There is a small chance an ice crystal can develop in the small container. You'll know. If an ice crystal develops set container down outside away from the building. In a few minutes it will empty. Give the small empty an hour to melt the ice crystal. Refreeze.

As mentioned before only reuse so many times. If an ice crystal develops on a container more than once toss it. Leather gloves are required in case of leak. Leaking propane will hurt bare skin.