Check IPC-A600 which is for PCBs.
Submit pics of the sections if you want an opinion.
Brs,
Gerry
Victor Hernandez <[log in to unmask]> wrote:
Fellow TechNetters:
In the above stated standard DON"T see anything that refer to a defect from the desmear process which created a bow/flex, hour glass shape, on the copper hole wall from uncleansed debris. No lead will be inserted in this PTH. Is this type of anomaly acceptable. I don't suspect that the laminate is FR4 at this time. Perhaps later will identify.
Victor,
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