On Wed, 14 Nov 2007, Dan wrote:

So short of doing your own transfilling, where does everyone get cheap
O2? Or are you paying big bucks at the FBOs? For an occasional user,
the transfilling equipment does not make sense.

You can put together an adapter for pretty cheap, from parts at your local
hose shop.

I fill from my neighbor's welding bottle. The only payment he requires is
the occasional favor.

-Dan