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Try 4 as a constant times the cutting speed divided by the diameter. (4X50 /dia) Much easier to remember. Taught it that way to my students for decades. This assumes HSS tool. Carbide is triple.
N=3.83xSFM/Dia is much more simplified.
An easier method for metric calculation is Cutting Speed x 318, then divide by diameter.
what about the feed formula?
Marc Spector?
Try 4 as a constant times the cutting speed divided by the diameter. (4X50 /dia) Much easier to remember. Taught it that way to my students for decades. This assumes HSS tool. Carbide is triple.
N=3.83xSFM/Dia is much more simplified.
An easier method for metric calculation is Cutting Speed x 318, then divide by diameter.
what about the feed formula?
Marc Spector?