Click image for larger version.  Name: New Z Axis.JPG  Views: 879  Size: 23.3 KB  ID: 17960Click image for larger version.  Name: New Z Axis3.JPG  Views: 993  Size: 24.9 KB  ID: 17961Click image for larger version.  Name: New Z Axis.JPG  Views: 859  Size: 23.9 KB  ID: 17962

I think this will be my final Z axis design. 20 inches of travel with the ballscrew inside a 3inch x 5inch x1/4 wall box tubing. I have added supports to the internal of the box tubing to add strength and support the tubing when I cut the large slot on the backside for the ballnut.

I think this will keep it pretty compact and also plenty strong. As always comments are appreciated.

Thanks
Scott