The ratio of oxy to propane is approximately 5 oxy to 1 propane, when the gasses are at the same temperature and pressure. There are alot of cubic feet of propane in a BBQ tank as it is in it's LIQUID state. The oxy tank is still gas even though it's at 2000 PSI. I don't do large hollow work, mostly small solid stuff like marbles, pendants and icicles. A BBQ tank will last me months and months.
__________________
Roy
Hot glass does not crack.
Unless it is glowing and drippy, hot glass looks like cold glass.
|