Elaine,

An X-ray unit equipped with a jig that tilts the assembly will also
work.  That's what we use as our primary tool, as our through-holes are
obscured from the top with connector components.

Hope this helps.

Leland

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Brown, Elaine
Sent: Wednesday, November 11, 2009 12:23 PM
To: [log in to unmask]
Subject: [TN] Measuring hole fill

Good afternoon

How do you measure holefill to assess the 75% requirement.

I know it is by cross section,
--but is it the single plane of the section(all voids count as missing
even though you can
see that you have sectioned into a void and it is filled underneath)

--portion of the hole filled( even though there may be some small
voiding on the surface plane)

And if you are trying to use single plane, how do you assess 75%--visual
estimate?
I think the portion of the hole would be easier to measure, but would it
still be a visual
estimate.


Thanks in advance

Elaine



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