harry wrote:

....


need to clean the torch up, paying particular attention to the air
hole(s)/gas orifice (ie making sure it'snot parially blocked). You
need a piece of very thin wire for this. ...


What one needs is a set of torch orifice cleaning reamers...even HD has
inexpensive set.

http://www.homedepot.com/buy/plumbing-torches-soldering-irons/lincoln-electric-tip-cleaner-oxygen-acetylene-torches-117469.html

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