About 12 years ago I knew a guy who worked at a salvage house removing
chips from old boards and reselling them. They had a whole line setup
removing chips from whatever boards they had in at the time. They used a
hotplace filled with find grain sand. Stuff the board in the top and then
start pulling chips as fast as they could. It was the wildest thing I had
ever seen.
Ted Hatfield
On Thu, 10 Jun 1999, Clay Cowgill wrote:
> With a little practice it's not too bad to adjust temp/airflow to get just
> to the solder melting point, but not so hot as to burn the board or cause
> *too* much stress on the components. Most solder will flow freely by about
> 500 degrees F. Probably lower than a lot of soldering irons...
>
> I have a Hakko 850 hot air-rework unit. There are tips available that jet
> hot air only on the pins of various devices-- DIP, PLCC, whatever. The main
> problem is that the tips are around $150 a pop. :-(
>
> For bulk-removal of through-hole parts I'm going to get a big solder pot.
> Just basically dip the back of a section of board and start lifting out
> devices. If the boards have had the leads bent over or something though
> that can be pretty tough.
>
> For through-hole rework I bought a Weller 4624. It's about like a PACE or
> Hakko vacuum desoldering station. Built in pump, etc. Works pretty well--
> tips aren't too expensive. Like the Pace and Hakko's I've used you have to
> keep the collection chamber pretty clean...
>
> -Clay
>
>
Received on Thu Jun 10 16:26:02 1999
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