Clackamas Steel last week when Jack & I stopped by to pick up material for one of his projects. Regular welders will usually have two similar size tanks, a tall, thin, green one for oxygen and shorter, fatter, red one for acetylene. Never seen anybody using an oxygen tank this size for, well, for anything. Looks like they are using propane for fuel. Propane probably doesn't work as well as acetylene, but evidently it works well enough, and it's a lot easier to get. You can pick up a bottle of propane at your local drugstore, for Pete's sake.
3 hours ago