Z drive screw mount

I decided I wanted a little more "beef" to this. partly because I extended by Z volume from 250 to 500 while adding this second z drive assy. It is a remix to jackywinter's creation.
https://www.thingiverse.com/thing:3384485

I used M3 bolts and nuts. You can use between 15mm and 25 mm pretty easily. You can see from one of the images, the 15mm is a very close fit.

Also, note, the brass drive mount is inserted at top