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by JasonG
Mon May 14, 2012 9:30 am
Forum: Products and Services
Topic: Cadence Allegro (OrCAD) PCB Editor ~ Gerber & Drill Output
Replies: 2
Views: 37456

Re:Cadence Allegro (OrCAD) PCB Editor ~ Gerber & Drill Outpu

For 4 layer boards the website PCB Express states that the inner layers are to be negative artwork: Inner layer exposed copper Required: draw .050 mil trace back set/keep-out areas for processing. (See sample picture A.) This results in a negative plot where our film will flood the empty area with c...

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