Summary

A nice way to stack 2 or more Rpi's.
Based on the Built to spec Rpi case.
(slightly larger bolts)

Instructions

All parts made from 3mm acrylic,
The dxf file is for a 5 high tower and 1 case.
obviously you make as many as you need and edit the tower drawing!

the cases are bolted to the stand with 8mm bolts.
The heads of the case bolts poke through the stand so you need to check the head size of your bolts and make changes to the drawing if needed.

I recommend making a case for and checking your bolts work
I used 3.5 x 20mm slot heads for the cases,

the Silver bars in mine at the bottom is there purely for looks!

Raspberry Pi Tower