610F is for assembly. What you are looking for should be in one of the PWB fabrication standards, such as 6012, 2222, or 2221.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Thursday, February 11, 2016 2:06 PM
To: [log in to unmask]
Subject: [TN] IPC-A-610-F

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,


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________