My vision is bad enough with such small fonts that I thought I read
about an Oxygen Bottle Killing in California.
Sounds like a B bottle is needed. Look for welding supplies in the
area, many deliver for a charge.
I know this is probably contrary to commonsense and science but I
anneal a lot of metal in my covered gas grill. I make a number of
Christmas Tree ornaments from Brass and Copper which I buy at Lowe’s
or Home Depot or any Crooked Cabinet Company in the area. The brass
rod is hardened when it is formed and the copper 8-10 ga round wire
hardens when it is coiled.
The copper readily anneals with flame but it becomes way too soft
for some of my applications. The brass anneals with the torch too
but I don’t want to invest the time in torch play. I crank up the
grill, lay a batch of metal rod on the grill, tent them with fire
brink and let them cook for an hour more or less. The brass comes
out softer but not fully annealed, same with the copper. Even heat
so even normalization. A full tank of gas costs less that one
ornament and I heat up the material for a dozen ornaments at a time.
And the metal is soft enough to hand form with just enough fight in
it to work the way my process has developed.
I could easily set up to do two or three dozen ornaments this way
but I don’t like to prep more material than I plan to use at a time.
Anyway, Happy Thanksgiving