I've been wanting a good "bowl" type fire pit for our patio but really heavy ones (ie: won't rust out in one season) are extremely expensive. The other day I was driving down the road and saw a 420lb/120 gallon propane tank laying on its side next to an old garage. I got in touch with the property owner and scored it for $25. I plan on cutting the tank somewhere below the bottom 1/3 so that I have a nice bowl sitting on a pedestal:
First things first before I do anything I'm going to remove the valve and simply let it vent, assuming there's anything in it at all. I've heard of people filling or flushing them with water before welding or cutting but propane vaporizes at -44ーF so once the tank is depressurized (by removing the valve) and vented to atmospheric pressure it simply turns to a gas and escapes. What's the best way to get a nice clean cut all the way around the body of the tank? Once it's cut open I'm just going to coat it with BBQ paint, put some holes in the bottom for airflow, and maybe a grate to hold the logs/coals off of the bottom.
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