[hpsdr] Hot Air Soldering

[Mel Whitten]

Very good, Peter ... also a lot of info from the www.ipc.org

Look for it in their training materials. 
http://training.ipc.org/html/cdrequest.htm

Mel
k0pfx


----- Original Message ----- 
From: <hughes3hns at aol.com>
To: <hpsdr at hpsdr.org>
Sent: Friday, June 23, 2006 2:23 PM
Subject: [hpsdr] Hot Air Soldering


> ***** High Performance Software Defined Radio Discussion List *****
>
> Here are a series of technical articles which explain why Hot Air
> Soldering/ Rework  is better than hand soldering and basically how to
> do a good job at it. They also explain why bottom heating is necessary
> and a lot of other trivia.
> Even if you don't have all of the fancy equipment you can still benefit
> from the principles and maybe take a minute to design your own from
> common household products.
>
> http://www.zeph.com/
>
> Click on Technical papers on the left.
>
> Here, at work, we use a HART ( Hot Air Repair Tool), A machine which
> basically blows heated air on both the top and bottom of your board..
> It isn't really all that complicated and still allows you access to the
> board to work on it while it is still being heated. Everything is
> bolted down so you don't have to balance a hot air gun in one hand, a
> soldering iron in another and the board in another.
> What you want to end up with is a cross between a convection oven and a
> hand held hot air gun.
>
> Mostly you just want to keep the temperature fairly constant and
> blowing in  a small area so you don't have to do everything at once. It
> shouldn't be all that hard to  hook up a small squirrel cage fan to
> blow the air and design a small, or large,  temperature controller.
> And it makes removing those hugely small multipin IC's just as easy as
> melting butter.
>
>
> Just one more source of information.
>
> N7BMG
> Peter Hughes
> Hagerstown, MD
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