Z axis drive for cnc bridgeport clone, ideas?

Hi there,

Been out of the game for a few years due to a bit of titanium added to
my spine. Trying to finish an old project.

I need a z axis ballscrew drive for a Bridgeport clone. I know about
the Elrod but the $$$ are way too high. Someone was making a table
drive years ago but I can't seem to find it anymore.

Any sugguestions on plans, a kit or whatever is available???

Your help would be most appreciated!

Thanks!