RE: homemade security box
muzzlenut,
It looks pretty functional. I too have thought about trying to make my own security box but have no way to weld. One thing I see in your pics that I would be cautious about is using foam to shim up the camera. It will get wet and it might cause the camera, over time,to draw moisture since it, the foam, will never dry out inside the box. But I think using that old ammo box is a great idea. They are nearly indestructable.
Blessings.....Pastorjim