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February 1997

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Thu, 27 Feb 1997 14:42:46 -0500
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From [log in to unmask] Fri Feb 28 08:
45:45 1997
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Subject:
FAB: 3 layer board with 4 oz copper
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sam mccorkel <[log in to unmask]>
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I have 2 issues that I'd like to get some advise on.
1) Does anybody have advise on etching 4 oz copper? The traces are .024" and
we etch with ammoniacal etchant.
2) Is there any advise on laminating a 3 layer board with 4 oz base copper
on all layers? .062" finish thickness and the layup is at our discretion.

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