Ah! I meant to explain, the "Nominal Chipload" parameter is the chipload corresponding to a 1" diameter endmill. For all other tool diameters, this value is scaled to calculate the appropriate chipload for each unique tool. In most cases, the default 0.010"/in value should be near ideal. If you find the calculated feedrates consistently too fast, or too slow, for your machine, then modify this value accordingly, and the feedrates will be scaled more-or-less proportionally.