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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