made these yesterday on the nm145. turned oor ok, bu tthe only bit i had was an overly long high speed steel 1.4" and it chattered and chipped the teeth resulting in a poor finish on the sides. going to do some more soon with a better stup. ive done brass before with carbide and the finish was perfect, so i expect i can get the same results on these kitties.
doing an aluminium non kitten related part today, going to see if i can get a nice video of it cutting.