Annealing

[mikeg]

I have a setup I bought 30+ yrs ago that has a small propane fitting on one end of section of 1/4" brass tubing and a fitting that fits grill size tanks on the other. The instructions were to screw the bottles to the right ends of the tubing, invert the large tank, so that when you open the valve you fill with mostly liquid compressed propane, not the vapor. It helped that the small bottles had an extra fitting with a tire stem in to vent when you were filling.
But I also anneal like Gunner 500 using my fingers or if I have a lot to do use a small cordless drill with fixture I made to loosely hold the cases that I tilt into the bucket of water.