That article is actually from an old Fine Woodworking magazine (maybe 1997?). The primary flaw with the test is that it is on a CNC machine. Freud (and others) makes bits particularly for that application but that is not what was chosen nor is it indicative of the type of life you would obtain in a hand fed operation. And even allowing for that, all of the unique bits in the test are likely to have different intended speeds and feed rates so the data is really meaningless. |