Fablab Feeds and Speeds Calculator Massachusetts Institute of Technology
Acrylic: 500 ft/min: Quite brittle, need to be more careful about cutting (use small chipload [] and stepdown []), cheaper material. ... which means that you have to use relatively small diameter end mills in order to end up with surface speeds this low. If not using coolant, then max surface speed is 50 ft/min. Insulation : 1000 ...