FlexATX Tray w/2 drive mount.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/exGWOjzG2BT

We have arrived at a usable version!
Virtual assembly went well, as did my initial printed version.

Printable Parts:
4x bottom
4x middle
4x top
3x Tray1
3x Tray2

Unprintable Parts:
7x M3x10 Socket cap screw per tray.

Recommended:
M3 screw tap.