Several of the birdhouses I build use the same type of base. It’s basically a platform base with four feet. The edges are cut on an angle between 30 to 45 degrees depending on how I want the base to look.
I use a peace of scrap cedar wood 1 1/2″ x 3/4″ and cut four 1 1/2″ feet from it for the base legs. If no scrap is avaiable I cut a strip of 1 1/2″ cedar from a 1″ x 8″ x 8′ and cut the feet from it.
I then measure and cut a 10 1/2″ x 10 1/2″ x 3/4″ base. The wood in the photo is pine but I try to use cedar when I can. The edges of all four sides of the base were cut on a 45 degree angle on my table saw. Some of my bases are larger and some are smaller depending on the look I’m going for and the birdhouse I’m building.
I glue the feet on with Elmer’s Wood Glue and use a couple 1″ brads from my air brad gun to hold the feet on until the glue dries.
After the base was assembled I painted it with white paint. I made a mistake on this one and painted the inside area. Remember we don’t want paint on the inside where the birds will live.
And that’s all there is to making the birdhouses base.