<VV> Re: Cold Solder gun

[Dave Morris "BigD"]

I'll put things in perspective.  One of the electronic technicians at my 
office bought one and he came in all beaming to show it to me.  It actually 
does work as advertised.  Heats up instantly, cools down 
instantly.  Appears to use a split element (maybe ceramic?) that requires 
you to touch both of the split pieces to the joint to be soldered.  Works 
just fine despite the theories that it won't work.

Dave Morris

At 10:36 AM 7/4/2005, John Kepler wrote:




> > I just saw a mini-infomercial on TV for a thing called a Cold Solder gun.
>I seems unlikely that it works as advertised. If anyone has tried one of
>these, or know how it works, please let us know. Sells for $20, and sure
>would be nice when working upside down under a Corvair dash :-)
>
>Let's put things in perspective.  Those little dinky "pencil" soldering
>irons they sell at Radio Shack that just barely work draw 10 watts and are
>about the minimum power required to adequately solder a SMALL electrical
>connection with a low-melting point solder.  That "Ronco Special As Seen On
>TV!  Cold Solder Gun" uses 4 AA batteries as a power source.  Now, the
>science question for the day is:  How long do you think 4 penlight batteries
>are going to keep a 10 watt light-bulb burning (BTW, @ 6 volts, 10 watts
>requires 1.667 amps!)?  How many watt/hours do 4 AA batteries produce?  When
>you finsish the math, you should have a pretty good handle on how well it's
>actually going to work!
>
>Remember when your Mom told you that things that seem too good to be true
>usually are?  This is what she was talking about!
>
>FWIW, those little "pencil flame" butane torches that Harbor Freight sells
>really do work for tight "under-dash" soldering jobs!
>
>John
>
>
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