Yes, we've done it a few times.  Of course, make sure you vacate the
internal layers, if any.  Because of the laminate tollerances we specified
the distance from the bottom of the board to the bottom of the
countersink.  Our board vendor didn't seem to have a problem with it.

Larry Campbell
BFGoodrich, Avionics Systems

>>> Howard Lin <[log in to unmask]> 03/24/99 11:09pm
>>>
Hi all,

Has anybody seen countersink hole on PCB? What is it? How to make it?
Any input I will be very appreciated.
Howard
Maxedge Electronic Corp.
[log in to unmask]

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