A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill. $ I/ H- t- z$ KNote: CS=80% ~* \$ s1 K) \% @0 p$ @
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RPM 1/8=2 R+ @2 j# Y, a6 T+ d
RPM 3/4= d& |' `9 Q$ I# W' a