Need Help - What is the Surface Speed and RPM for Aluminum with a 1/16 drill

Thread Starter


Joined Mar 18, 2020
Have been spending quite some time looking at various metric drill speed charts and can't find an exact answer for surface speed. I can find RPM, once surface speed can be determined.

(4 x surface speed) / 0.625 diameter.


Joined Jan 18, 2008
As this is homework, what have you done to solve the question?

If you want the surface speed, search on "speeds and feeds" for whatever substance on which you are working. Aluminum is generic. You will find different results for different alloys. But, your instructor probably just wants a typical setting for a common alloy,