Quote Originally Posted by njhussey View Post
I'll have to dig out the drawing of the gantry (estimated) to work out the mass, ballscrews are 1610's length is 1300mm, feedrate I've not calculated (or did but can't find the calculations on the spread sheet) but it will be cuttng balsa wood, plastic and aluminium.
Just to be clear that's two ballscrews at 1300mm long, not one? By feedrate I meant what feedrate do you want, not expect, so for cutting those materials I'd say around 8-10m/min would be suitable. The mass doesn't have to be that accurate - within 10% is plenty good enough.