[Shop-talk] Shielding gas tank

[Doug Braun]

The welding books I have read suggested about 10 liters/minute for the gas flow.  There are 28.3 liters in one cubic foot.  So a 20 cu ft gas cylinder should last for about an hour of welding.

Now, how long it will take you to do an hour of welding, I cannot say.
Could be anywhere from a couple of days to a couple of years.

I've forgotten my cylinder's size, but it is 26" from the base to the top of the valve handle.  (It's probably 40 cu ft.)  I last filled it 5 years ago, and it is almost empty now.  During that time I have done a bunch of small projects, including all the sheet metal repairs on my '31 Ford (see 31ford.dougbraun.com).

Doug


--- On Thu, 12/4/08, Jim Stone <jandkstone99 at msn.com> wrote:


> How long does 20 cu ft of shielding gas last?  Given the
> minimal cost
> difference between 20 and 40 cu feet of my primary
> shielding gas (I have no
> idea what they get for other mixes), am I stupid to even
> question this?