Re-purposed condemned SCUBA tanks

[lawrenceb]

I'm not sure how the cylinder was initially charged, but in the end, an ice ball did form around it. I think the process involved placing something else, some other part of the DIY, over a fire. When that was done, then the desired ice ball formed around the scuba cyl.

The gist of it was that one could obtain ice by vaporizing(?), via the heat of an outdoor camp fire, the liquid in the system, essentially making a fridge.

I wish I could remember more details.

 

[Nathan Doty]

I guess you could look at how a propane fridge works and expand its size greatly. All you need is ammonia and hydrogen.

 

[Rickk]

I dove with a club once that had a used tank shrine as one of their underwater navigation points. They had a underwater nav route set up and a very impressive pile of old tanks was the starting/end point since it was pretty easy to find..

Donated a tank to them when it failed.

 

[wetb4igetinthewater]

Just ran across this today on FB. Maybe others have seen it as well.

I might do this as well. I won't have fish inside as I'll kill them, but some rocks, a plant (like seen here), maybe a shell or two.