Mechanical component size

[phyorch]

I have processed one set of the mechanical components. But it seems hard to set all cameras just right.
One of the camera is blocked by the stake. How can I solve this or can I use less cameras? Thanks!

[laisenglee]

This is the equipment I assembled for reference. Some USB cables need to be modified.**

[SCKelemen]

To the people building these: roughly, what is the cost of building one?