Are you are talking about the Coleman cold heat
thing? If so, pass it up. It is actually to
electrodes very close together and it produces
heat by passing a current from one electrode to
the other through the material to be soldered.
That is, the wire heats but the tip doesn't. Or
it isn't supposed to but in real life the tip also
Tried one and it is lousy compared to a regular
gun-- you have to hold it just so, it takes longer
than a regular gun, and the wires get hotter
before the solder melts so there is more chance of
damaging a delicate component.
Not junk.... JUNK!!!!! with a capitol J-U-N-K.
( I don't fall for infomercial stuff but I fell for this one and I am
still pissed )
It is nothing more than 4 AA batteries that are shorted when a
conductor bridges a slight gap between poles at the tip. If you don't
hit what you are trying to solder just right no heat and no love.
If you need to do a lot of light soldering and need portability ( no
wires ) a butane iron will do much better. They go 30 or 40 bucks.
If you only need to solder every once in while goto Radio Shack and
get a 15W cheapie iron. Get used to plugging it in and waiting all
of 1 minute while it heats up.
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