[mythtv-users] Soldering iron vs. soldier gun (was: Help with a semi-busted hard drive))

[JDeGraw]

I never knew that. Cool.

Thanks for the info.


jDeGraw

On Mon, 2006-02-13 at 15:14 -0700, Brian Wood wrote:
> On Feb 13, 2006, at 2:48 PM, Clyde Stubbs wrote:
> 
> > On Mon, Feb 13, 2006 at 07:21:28AM -0500, JDeGraw wrote:
> >> You will need a variable soldier gun to fix it. The average run of  
> >> the
> >> mill soldier gun does about 30 watts of power. This will melt  
> >> everything
> >> around it and damage the board. You need about 15 watts I do believe.
> >
> > A soldier gun?? We're trying to fix the thing, not shoot it!
> >
> > Don't even think about using any kind of gun, solder or soldier,  
> > for this work.
> > A soldering iron is the correct tool.
> >
> > Also, it always puzzles me why various wattage ratings are tossed  
> > around as being
> > the "correct" value for various applications. The only type of  
> > soldering iron
> > you should use on something like this is a temperature controlled  
> > unit, like
> > the Weller TCP. I have no idea what its wattage rating is, probably  
> > 60W,
> > but this is irrelevant since the tip temperature is controlled.
> >
> > Using a small non-temperature controlled iron is actually a Bad  
> > Idea since the
> > longer the tip is in contact with the work, the more the surrounds are
> > heated. Good soldering is done at the correct temperature, very  
> > quickly!
> >
> 
> It's pretty neat the way some Weller temp control tips work. The tip  
> has a fixed "curie point", which is the temperature at which a  
> permanent magnet looses its magnetism. So the magnetized tip pulls a  
> reed switch on to heat it up and when it hits the curie point the  
> current switches off.
> 
> This allows you to get different temperatures by simply using  
> different tips.
> 
> Pretty neat IMHO. So much for today's physics lesson :-)
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