Should of been more specific. I meant deflection of the whole machine pretty much. The bit will barely deflect cause well, it’s carbide and were not pushing them that hard. For example, I cut aluminium 1/4 inch in one pass. (6.35mm doc) and never even get close to running out of stepper power. And that’s not even with the steppers or drivers getting hot.
Idk you can try it and show us but if you want to cut faster I don’t think the steppers are what’s holding you back.
Cast parts would be pretty neat.