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Your outer layer pads need to be 0.017″ larger than the finish tool size (0.010” for vias). Your inner layer pads need to be 0.018″ larger than your finished tool size. If your design has any pad to trace junction minimum requirement, add that to the above numbers [0.017″ pad + 0.002″ junction should have 0.019″ pad].

PCB Glossary

  • Pressing

    The process by which a combination of heat and pressure are applied to a book, thereby producing fully cured laminated sheets.