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Fri, 01 Nov 1996 19:35:57 +0800 |
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| From [log in to unmask] Mon Nov 4 09: |
49:54 1996 |
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question 1 :
to manufacture fine line PWB, if there is limited by mechanical force
(ex. scrubbing)
to prepare the copper surface before outer layer dry film process. if
there is.
what is the ultimate ? how fine can it prepare by scrubbing way.
whether is it by Belt sanding way better or more economical by scrubbing
way. because
the belt sanding equipment is very expensive.
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