>The board house we use for prototypes, and the one we
>use for production take the hole sizes in the file to
>be different things. One uses it as final size, the
>other uses it as drill size.

And you don't specify which you want? We always specify the hole sizes to be
"after plating" with a size tolerance. The hole size needs to be set to
guarantee that the pin will go into the smallest possible "after plating"
hole from the tolerance setting. It is then up to the board house to drill
the appropriate size hole.

If the prototype house uses the hole size as the drill size, for cheapness,
then I would have thought it was up to them to use a slightly larger
standard size, with suitable agreement with yourselves, as the hole may then
be over the upper tolerance. Certainly be easier to deal with than having to
attack component leads. But if they also do production work (even if not for
you) I would have thought they would be purchasing the slightly oversize
drills needed to guarantee the hole accuracy, in sufficient quantities that
the cost difference would be minimal, compared to standard size drills.

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