Quote Originally Posted by Seluntiy View Post
The gas pressure in the fire extinguisher is the same as in a normal cylinder. Carbon dioxide is no different. I put the pressure at the outlet about 0.2. I'm still just learning, but I like the seam.
Just turn the fire extinguisher upside down
I was more interested in the quality of the CO2 and any impurities that might be introduced. i would think there is not as close attention to the quality of the CO2 as opposed to that supplied as an inert environment for welding, but if it works and welds look good and strong, must be ok, I will certainly keep this in the back of my mind for future use though.