Propane pressure is set at about 6psi and Oxygen at about 10 -
12psi for a #2 tip reamed slightly larger. I believe my pressure
settings are less than ideal. Please share your knowledge and
If someone would stop me on the street, with the gun, and ask me what
is my pressure is, I would not be able to tell him, because I have no
idea. So forget the numbers, use your eyes instead.
Open you propane tank and set regulator to give you about 3 to 4
inches of flame. Add oxygen to form soft reducing flame. That is how
I like to solder. If circumstances require neutral flame, reduce
propane to 1.5 - 2 inches, and add oxygen till neutral flame forms. I
do not use oxidizing flame, but if needed, make propane flame even
smaller. These are only rough guides. If flame is too hot for your
level of skill, reduce propane accordingly, if it’s too cold, than
increase it. The point is that some experimentation is required.