Re: flameless heat !

Ah-yup.  I once decided to use a torch to make some bolt holes for a
frame mounted receiver hitch on an old beater truck.  I clamped the
hitch in place and used the bolt holes as torch guides.  Imagine my
surprise when I blew through a fuel line on the opposite side of a
member and flaming gas poured out.  One of the few times I was happy to
be working on a truck laying on the ground in the middle of 100,000
square miles of kitty litter.  A couple handfuls of sand put out the
fire, and all that really poured out was what was in the line.