>>
> http://www.howardelectronics.com/chipquik/products.html
>>>
>>>
According to here:
http://www.howardelectronics.com/chipquik/smdrepar.html

Chip Quik    48% Tin, 28% Lead, 21% Indium, 3% Bismuth
Melts at 136 F (!)  (that's "touchable", pretty much.)

Indium is comparable to silver in cost; you can get it on eBay pretty
regularly for about $1/gram.  (Gallium goes for about twice that.)

It's not quite so simple as being a low-temperature alloy.  You also
want it to REMAIN a low-temp alloy after it's been mixed with the lead
and tin from the regular solder you're trying to remove.

Indium and Gallium are fun.  There are some alloys thereof that are 
liquid
at room temperature: 75.5%Ga/24.5In is liquid down to 16C, and with some
tin and zinc you can get liquid down to 7.6C.  It's not quite as much 
fun
to play with as mercury, cause it tends to wet glass/etc instead of 
having
that reverse-capillary action thing going on.   But it's still fun.  I'm
not sure it's worth $2/gram to play with, but...

Lots of info at http://www.indium.com (Indium corp of America.)

BillW
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