Quote Originally Posted by Washout View Post
(I'm wondering if I should back off of 500mm/s/s acceleration?).
No, you want to increase the acceleration if anything. I run my machine at around 1m/s^2, so twice what you've set. Part of the reason m.marino got such high feeddrates in post #91 is that the acceleration was set very low, and it's a compromise between high acceleration and speed.

For example, in this video I set the acceleration lower and put a bigger pulley on the motor, and got 60m/min:
https://www.youtube.com/watch?v=k3MG7ww49A8
... but it's not terribly useful.