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'[OT]: Cold Heat? Hmmmm......'
2004\10\14@144150 by Robin.Bussell

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Hi Folks,
               I just got a bit of spam advertising an allegedly revolutionary
new soldering product,
the "cold heat" iron. "your perfect soldering iron"

Hmmmmm.....

Throwing caution to the winds with gay abandon I actually clicked on the link,
and
after some redirects which no doubt mean I'm now marked as a sucker forever in
the
eyes of direct marketers I found out a bit more.

Here's a direct link to a web site:

https://www.asseenontvnetwork.com/vcc/coldheat/coldheat/techfaq/122463/

Note the heavy use of the terms "patented" and "proprietary" along with a
"revolutionary new material"  .... my snake oil sensors are starting to twitch
by now.

... oh and according to Q4 in the FAQ one uses a soldering iron on an ironing
board!
Anyway, a quick google throws up this:

http://forums.afterdawn.com/thread_view.cfm/94949

and this:

http://www.runryder.com/helicopter/t112848p1/

or even this:

http://www.moddershq.net/reviews.asp?reviewid=32

Which really *really* makes me appreciate the quality of information we get here
on
the piclist !

All in all I'd say it looks like a case of don't waste your money on this one
.... anyone tried
em? Personally what I've read won't make me throw away my trusty weller TCP in a
hurry
and as for merrily soldering SMT components with it as per their advertising
images.. I think not!

I hope bringing this to your attention has caused more amusement than dispair on
balance :-)


Cheers,
           Robin.











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2004\10\14@163215 by Mike Hord

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> I just got a bit of spam advertising an allegedly revolutionary
> new soldering product,
> the "cold heat" iron. "your perfect soldering iron"

> http://www.moddershq.net/reviews.asp?reviewid=32

It looks to me like it might actually have a use, but as usual,
don't toss out the old model.

Problems I see:
1.  Doesn't seem to have a temp control; it just gets hotter and
hotter until the power dissipation of whatever it's touching
stabilizes the temp.  Good if you're working with wires, bad if
you're soldering a PIC.
2.  Battery operated, so don't think you'll spend hundreds of
hours working with it.

Benefits:
1.  Fast heat, which goes away equally fast.  Solves that old "I
need to make one connection, but I don't want to wait for the iron
to heat up, and then avoid it while it's cooling on my desk"
dilemma that I'm always faced with (at home, at least, where my
desk space is limited).
2.  Portable.

For $20US, I think it actually may be a good deal.

BTW, the site above suggests buying it from thinkgeek.com,
which is an extremely cool website.

Mike H.
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2004\10\14@164534 by Dave VanHorn

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>
>Problems I see:
>1.  Doesn't seem to have a temp control; it just gets hotter and
>hotter until the power dissipation of whatever it's touching
>stabilizes the temp.  Good if you're working with wires, bad if
>you're soldering a PIC.
>2.  Battery operated, so don't think you'll spend hundreds of
>hours working with it.

Two AA cells is enough to forward-bias a diode, and potentially destroy
something.
I don't think I'll be using one of these on PCBs.


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2004\10\15@002131 by Bill & Pookie

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Radio Shack (Tandy) sells them for @20.00 USD.

Bill
----- Original Message -----
From: "Mike Hord" <spam_OUTmike.hordTakeThisOuTspamgmail.com>
To: "Microcontroller discussion list - Public." <.....piclistKILLspamspam@spam@mit.edu>
Sent: Thursday, October 14, 2004 1:32 PM
Subject: Re: [OT]: Cold Heat? Hmmmm......


{Quote hidden}

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2004\10\15@025309 by hilip Stortz

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actually, i have some metcal gear i bought on ebay, it heats up
alarmingly quickly and of course has excellent temperature control.  of
course you have to buy it on ebay or be rich.  

what i've wondered is if the cold heat produces esd or induced voltage
problems.  i'm suspecting that it's induction heating which i could see
being very bad for some electronics and requiring an insulated head and
thus posing static problems beyond what something with a metal handle
and tip would do assuming a conductive handle in your hand (which is
hopefully usually close to ground or at least not to hard to get grounded).

they do look cool, but i definitely want to know how they work first and
what the tip is made out of.

------
> {Original Message removed}

2004\10\15@042813 by Ward, David

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Err, did you actually try Metcal?

http://www.metcal.com/tips/hottips/technicl.html#how

-----Original Message-----
From: Philip Stortz [madscientist.at.largespamKILLspamearthlink.net]
Sent: 15 October 2004 07:55
To: Microcontroller discussion list - Public.
Subject: Re: [OT]: Cold Heat? Hmmmm......


actually, i have some metcal gear i bought on ebay, it heats up
alarmingly quickly and of course has excellent temperature control.  of
course you have to buy it on ebay or be rich.  

what i've wondered is if the cold heat produces esd or induced voltage
problems.  i'm suspecting that it's induction heating which i could see
being very bad for some electronics and requiring an insulated head and
thus posing static problems beyond what something with a metal handle
and tip would do assuming a conductive handle in your hand (which is
hopefully usually close to ground or at least not to hard to get grounded).

they do look cool, but i definitely want to know how they work first and
what the tip is made out of.

------
> ----- Original Message -----
> From: "Mike Hord" <.....mike.hordKILLspamspam.....gmail.com>
> To: "Microcontroller discussion list - Public." <EraseMEpiclistspam_OUTspamTakeThisOuTmit.edu>
> Sent: Thursday, October 14, 2004 1:32 PM
> Subject: Re: [OT]: Cold Heat? Hmmmm......
---------
> > Benefits:
> > 1.  Fast heat, which goes away equally fast.  Solves that old "I
> > need to make one connection, but I don't want to wait for the iron
> > to heat up, and then avoid it while it's cooling on my desk"
> > dilemma that I'm always faced with (at home, at least, where my
> > desk space is limited).
--------
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2004\10\15@134105 by M. Adam Davis

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From the FAQ:
We do not recommend it for soldering of large metallic components that
require a lot of heat transfer or for soldering sensitive electronic
components that may be damaged by fast-rising temperatures or high
electrical current. (Momentary high-amperage current will be created
during active soldering.)

So it looks like a standard soldering gun type tip - shunt large amounts
of current through large wire to a tiny junction that heats up quickly.

Uses 4 AA batteries is is supposed to be good for 700 joints.

-Adam

Philip Stortz wrote:

{Quote hidden}

>>{Original Message removed}

2004\10\15@155913 by Peter L. Peres

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On Fri, 15 Oct 2004, Philip Stortz wrote:

> actually, i have some metcal gear i bought on ebay, it heats up
> alarmingly quickly and of course has excellent temperature control.  of
> course you have to buy it on ebay or be rich.
>
> what i've wondered is if the cold heat produces esd or induced voltage
> problems.  i'm suspecting that it's induction heating which i could see
> being very bad for some electronics and requiring an insulated head and
> thus posing static problems beyond what something with a metal handle
> and tip would do assuming a conductive handle in your hand (which is
> hopefully usually close to ground or at least not to hard to get grounded).

You can 'see' a Metcal's parasitic radiation on a spectrum analyzer (non
contact). I don't think it makes a difference unless you need to solder in
live circuits. Grounding the iron is not always a good idea, grounding
through a resistor with an indicator for voltage on the tip is better
imho. You need to solder in live circuits with batteries (lead acid) to
understand what I mean imho.

> they do look cool, but i definitely want to know how they work first and
> what the tip is made out of.

It could be a tiny tungsten lightbulb crimped in metal.

Peter
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2004\10\16@195726 by hilip Stortz

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Metcal i know about, it's the "cool heat" i was wondering about, while
mentioning that metcal gear heats up quickly and thus is convenient for
soldering 1 or a few connections, just as the cool heat would be.  sorry
for the confusion.

"Ward, David" wrote:
>
> Err, did you actually try Metcal?
>
> www.metcal.com/tips/hottips/technicl.html#how
>
> {Original Message removed}

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