[mhasting2004]

Hi sweckard

Your design looks in a lot of ways like mine. I'm curious why most people mount the rails to the fixed part and the bearings to the Z slide. I've done the opposite on my design and figure that when the router is high I have the best rigidity (bearings close to router) and when its low its no worse than if I did it was the other way around. The rails also add stiffness to the Z slide. Thats the theory anyway.... I'm still building.

To reduce my COG I am opting for a rotating nut and a fixed ball screw so that the Z axis motor is stationary and off the z slide.

Note my Z axis travel is quite long (530mm).

Cheers

Mark


BTW how did you select all your parts to get the COG. Mine are sub assemblies and it doesn't seem to like doing more that one at a time.