Not a bad idea.
I made it this way with all the other housings available online in mind, which have very little overhang. I was skeptical about those little birdhouse roofs, etc,… being enough, but it seems to work for them.
Also, it’s hard to tell from the angle, but I gave it a little more overhang than any of those by gluing it as far forward as it would go.
This camera is under a carport though, albeit right at the edge, but I had another cam watching the pressure gauge on my pool filter, completely unprotected. It saw some pretty serious storms and lived to tell the tale.
Still, I think next time I’ll snip out a simple visor from a clear plastic produce container and glue it on top.
As far as the canister being cut all the way to the bottom, it’s still quite strong and solid due to the ribs in the plastic.
The bottom screws are just 1/4" D-ring camera screws, available on Amazon.
P.S. I made a spacer between the bottom of the camera and the bracket out of the top of a prescription pill bottle, as you can see. I’m trying to remember why. lol I think the screw might have been a little too long to tighten the camera down properly and that solved the problem.
https://www.amazon.com/gp/product/B006GB5MDW/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1