Well, the OP asked "is there a machine I can buy that will fill tanks".
He didn't say "I found a concentrator in the trash, can I hook it to a pump with a garden hose if I use enough duct tape and WD-40?"
Instead of telling him "Yes, talk to Onsite or Unlimited Oxygen," everyone started telling him he was going to blow himself up. Notice the *first* freaking reply.
Since I actually know the guy, I wanted to make sure that he got a straight answer.
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