How big is MC compared to B?

IIRC, around here, it's about $20 to fill a B tank w/ acet.

I'm wondering the relative costs to MAPP, as well.
Altho if you already have O/A or plan on using it, proly it's most
economical to go air/acet for sweating.

Oh, ahm postin from Giggle cuz my ISP (RCN, took over erols.com) keeps
knocking out ngs, and they don't have a clue as to what's goin on.
Some characters over there believe that RCN don't support ngs!!
Iny idears??

Inneresting to see how this posts up.
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Mr. PV'd