Scott,

Sounds like they had resist lifting issues.  I have often heard the term
"mouse bites" to describe intrusions.  If these are print and etch layers
then the resist failed at the mouse bite.  If the entire line is ragged
then they might either be over developed or sometimes the developer rinse
is to hot and the lines "Scallop" or get wavy allowing the etch to look
the same way.  Plate up boards can also have the scallop edge or if there
is resist left from incomplete develop then you can have the intrusion or
bite.

Anyway you look at it, sounds like poor control of the developing process
to me.

Chuck Brummer
3M Manufacturing Engineer
8357 Canoga Ave.
Canoga Park, CA 91304-2605
(818) 734-4930

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