Hi I just finally bought some good quality bits from Amana Tool and they have a special coating on them that is supposed to make them last longer. I was looking at their feeds and speeds recommendations and noticed for my 1/4 up cut spiral endmill the chiploadfor hardwood was at 0.0016 and that's seems low to me as I have been cutting hardwood and been running more in the 5X (0.005-0.009) range with cheap Chinese endmill. This this all depth=diameter Would the coating make the bit brittle or for any reason hinder me from making the same feeds and speeds? Or are they just being conservative with recommendations? I don't want to dull the bit with heat from too slow a speed... I like running 2 flute 1/4 inch bits at 14000 rpm and at 4-5m/min. Any other thoughts or concerns? Let 'em fly!