If 4-facet drills have all the touted advantages (truer holes, closer to size with lower drilling forces) then why aren't normal shop-bought drills supplied like this ?
Cheers,
Mike
- posted
18 years ago
If 4-facet drills have all the touted advantages (truer holes, closer to size with lower drilling forces) then why aren't normal shop-bought drills supplied like this ?
Cheers,
Mike
Just the extra cost of the two further operations to get the extra facets?
Alan
Doug
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