Bandmill Saw Formulas, Bandsaw Formulas, Bandmill Saw .
Feed = 2 x 0.1 x 18000 = 3600 mm per min. If the RPM were increased to 24000 RPM the new feed rate would work out to be: Feed = 2 x 0.1 x 24000 = 4800 mm per min. Based on this mathematical equation, as RPM increases, feed rate will also increase if all other settings remain the same. If the number of cutting edges changes, however the feed .These formulas accept as inputs surface speed and tool diameter to calculate spindle rpm, and they accept number of flutes, spindle rpm, and chip load to calculate cnc feed rate. In fact, I even built a calculator using just the simple formulas and made it available online for free.