This is my submission for the Floreon #DesignItWright competition. It features an edgeless bottom. It may be printed in any color, I choose black, because it was all I had available.
There are a couple of bores along the frame, these are quite unnoticeable unless you're looking for them. The purpose of the bores is to allow a small wire for attaching the lenses. I ignored this option, and used a dab of hot glue to secure the lenses.
There are multiple cuts in the model for the insertion of the hinges. Depending on the tolerance of your 3D printer, you may need to file the material for the higne to be attached correctly. I was unable to test the actual hinges, so I used just a dab of hot glue to secure the legs to the frame, for photographing.
My picures show the 3D printed model after it had been treated with acetone to give it a shiny appearance. Of course, these can be used without the treatment.