6 Jul
2007
6 Jul
'07
12:37 p.m.
On 7/6/07, David Griffith <dgriffi at cs.csubak.edu> wrote:
I haven't heard anyone discuss this yet: what causes traces on some old
PCBs to wrinkle and not others? My guess is a combination of suboptimal
glue and wide temperature swings.
Wrinkles? Ones I've seen are, AFAIK, solder buildup between the
copper trace and the solder mask, not between the copper trace and the
underlying board. You have something different going on?
-ethan