I've been talking to some of our old hands about TCE usage at Tektronix.  At Tektronix, TCE was used in several operations:
1.	It was used to degrease incoming pot metal, mainly zinc die castings.
2.	It was used in the manufacture of front panels of instruments, such as
	the anodize, print, and seal process.  First the panel was anodized, 
	then the lettering was inked on, and then sealed.  If the inking was
	incorrect, TCE was used to remove the ink prior to sealing.
3.	After stuffing, fluxing, and soldering, TCE was used to degrease the
	boards.

That's all I can find.  I can't find any information in the usage of TCE in
the actual manufacture of a circuit board, only in ancillary processes.

John Sharp
Merix Corp.
503-359-9300 (ext. 5-4351)
503-359-1040 FAX
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