Need 6' x 4' bed, 4 axis router design.. Help..!

[Jonathan]

Wouldn't a hollow ballcrew have a greater moment of inertia, which would affect the acceleration?
Otherwise it sounds like a good idea, if you've got a nice long drill :lol:

[fasteddy]

Hi Jonathan..

This may be straying into the realm of the theoretical, not sure such a thing as a hollow lead screw exists.. But I do see your point although the inner mass of a solid would still require movement and account for some of the power required to rotate it.. Just checked florins posted specs and he has used 25mm dia leadscrews, and 2 nema 34 12N motors to power them.. Those motors would probably pull my car up a hill..!

Steve..