I have a medical oxygen concentrator that I have been using for
three years, I run two mini torches, some times I have to use both
torches to solder a silver ring, usually I am using one, another
jeweler is using the other on a consistent basis, daily.
No down side. Upside, I have not had to pay for oxygen for years. I
I use my torch every day doing fabrication and repair. Cannot be
used for anything other than mini torches, to my knowledge.
Unfortunately my wife has to use concentrators, at home and at work.
When a concentrator does not put out the correct amount of pure
oxygen, it is usually less expensive for me to buy a used unit from
the classified ads have it tested, if it is working correctly, I
retire the unit that is not up to specs to my workshop. These units
have lasted for years.
I live in Denver, and there are probably more concentrators for sale
here because of the altitude.
Richard Hart @ 5280