Steve,
I just had this problem a short while ago, on through hole capacitor leads.
At first the quality control people were convinced that the holes must be reworked. We
analysed the assembly by X-Ray - luckily it is a small board which could be rotated ,
and saw that the solder stops near one of the inner layers, at more than 50% hole
length.
The X-Ray image showed the hole walls and the solder fill very clearly, as well as the
inner copper layer. Maybe you can try this method.
Gaby

Steve Collins wrote:

> Is there a tool that could be used to check the hole fill after
> wavesoldering. We do not have cross-sectioning capabilities here in the
> plant. I know that IPC calls for 50% hole fill but in our case when our
> quality people on the line see a partially filled hole they try and fill it
> with touching up. we are working on getting a grip on this with some
> difficulty.
>
> As a side note which parameter (% top side heater, dwell time, wave height,
> bottom side temp) on our Soltec wave solder oven would we want to change to
> possibly get greater hole fill when we have a very large heatsink part with
> though hole leads. I really don't have the time this time for a DOE for
> this and was hoping someone else has had this problem.
>
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