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Jon Elson[_3_] Jon Elson[_3_] is offline
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Default Precision hole drilling

Ignoramus3537 wrote:

I have a DRO. The issue is, if I move to point (1.2345, 6.5432), and
plung the drill down, will the hole really be in thast point or
somewhere close due to drill wandering.

OK. With the DRO, it is doable to get well-centered holes.
For the central hole and any locating bosses, use a boring head and
boring tools. You can set the exact diameter needed, the hole will be
aligned very accurately. For the bolt holes that will likely have a
little slop anyway, use a center drill first, then change to the
jobber's length drill and drill to size. it will be quite well
centered, probably within .003" or better of the table's position.
The bored hole will be within .001".

Jon