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| From [log in to unmask] Wed May 1 12: |
57:43 1996 |
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Problem:
Random Nailheading within a X-section with layer-to-layer variations
(example: Layer 5 good, layer 6: left side bad, right side good...)
Also some half-nailheading (into B-stage side, but not C-stage side).
No resin smear or post-sep detected. Bits used are new & 1st repoints
only with 1500 hits max (Tycom).
Product: 8-12 layers, stack height 2, thickness 62-104 mils, FR4
Typical Parameters:
.0135" dia, 100krpm, 111 ipm infeed, 800 retract
.033" dia, 66.6krpm, 173 ipm infeed, 800 retract
Any advice would be appreciated.
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