I would like to try the same test with my machine. For the cutting path, I just want to confirm that you used a plunge entry to go down to full depth and then made one pass to complete the square? What was the distance from the bottom of the collet to the end of the cutter? When you said, "not really sure about this one", do you mean you're not sure if it actually cut at 100 ipm or not sure what speed you had it set to? What is your acceleration set to?