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Harold & Susan Vordos
 
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Default Drilling flat bottom holes


"James P Crombie" wrote in message
...
Marty
Drill your 7/8 hole with a regular drill to the proper depth. Then
uses a reground 7/8 drill with flat bottom. It will need a relief gash
in the center to enable it to cut properly and I would put a small
radius on the corners of the drill to prevent chipping.



Sadly, while your suggestion is a good one, one that I have used for the
bulk of my years in the shop, it won't work in his case. The size of the
hole versus the depth won't allow for it.

Harold