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Date: | Mon, 16 Jun 1997 12:23:38 -0500 (CDT) |
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Hi there Technetters!
Hollis used to make a machine called the GBS that utilized a hot
airknife after the solder pot. I believe they have a patent on it,
however, they were bought by Cookson (Electrovert) a few years ago and
might not be enforcing it nor building it.
The customers I've had contact with are split 50-50 (approx) as to it's
usefulness. It does a fine job debridging, however the parameters
(temp, angle, force, distance) are somewhat critical. There is a
significant drawback as well: If an assembly which would normally have
"a few" blowholes visible were to be processed using the hot air knife,
ALL blowholes (a majority of the holes on that assy) would be exposed.
Some people believe in touching up blowholes and this makes the process
counter productive. Those who feel blowholes are a fatal defect are
delighted at the revelation... I guess it's a matter of philosophy?
To Tony: (originator of the topic)
I'd lost your email addy in an unfortunate digital-snafu... I'd like to
discuss this further with you, including developing retrofits for your
equipment. Please contact me directly at this addy or by phone, if you
are interested.
Regards,
Ed Popielarski
QTA Machine
714-364-6614
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