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Reply To: | TechNet E-Mail Forum. |
Date: | Tue, 9 Jul 2002 08:57:19 EDT |
Content-Type: | text/plain |
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Hi Alain,
From your description, you are talking innerlayer annular rings.
It sounds like your holes are being drilled with the wrong drilling
parameters/or dull drills/or both.
How can you trust these PWBs for any purpose in any Class?
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Fax: 386-437-8737
E-mail: [log in to unmask], Website: www.engelmaier.com
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