Fellow ThecNetters:

   Can someone share their experience in measuring the Lead Free PTH
copper thickness at the knee for first pass assemblies and then after 1x
and 2x rework.   This especially true on the solder side of the board.
I have reviewed the IPC-A-600F standard and did not find a
method/technique.   I believe the preferred minimum thickness is 0.5
mils for 2x rework.

Victor,

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