From what I understand, MAPP has added ingredients that increase the combustion temp. Propane, unless combined with oxy, just doesn't get that hot. But a while back (can't remember how many years ago) they changed MAPP to MAPP Pro-something that's not the same. That's kinda when I made the decision to only use the Hot Head to demo from then on.
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ESC
Soft glass on a Minor/concentrator since 1996
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