Hi Patrick

I do not know very much about good second hand x-ray units but I have seen
a very impressive BGA rework station (called fineplacer) on the
Productronica '97 in Munich. It works with optical alignment prior to BGA
assembly and has an impressive list of customers so far.  The name of the
company is

Finetech Gesellschaft f. Elektronik-Technologie mbh and is siutated in
Berlin/Germany.
phone germany at 030-294 08 06,
fax           030-294 08 06

Good luck, J?rg

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