A few years ago I made some accent lights for the back yard. I took a map book, traced it on plywood and cut the state out with a jig saw. I put many many coats of paint hoping to seal it from the sun and rain. I dissected a cheap solar landscape light and mounted the guts on the back. It gives off a nice drop shadow effect. I then made another one with the state of Minnesota, which was a bit more difficult to cut out.
Fast forward a few years and the sun and elements have really destroyed Nevada. So I am going to try and recreate it with cement.
- Make a cast: I tried making a cast with spray foam but it was too porous. I bolted 2 sheets of plywood together and cut a new jig out.
- Fill with cement: Mixed some 5000psi concrete with some tinted countertop plasticizers. Add some wire mesh. Wait 7 days to cure.
- Mount the electronics: I found a bright 30 lumen LED yard light at Lowes. Take out of plastic shell and attach to back.