I'm building a U frame (inverted U). So it will have two side pieces, and one piece sitting at the top of these sides.
I plan to use a 3/4" melamine that is 4 inches wide. It is white melamine on both sides, but the edges are not.
The sides would be 58 inches tall each, and the top is 70 inches long.
It will look like a console table, but this is not a table, just a decorative frame. I might include another piece of wood in the center if it sags due to the length.
I will do this at home, I don't have special tools (I have a drill, rotary tool, screws, etc. but not mills and other bigger/heavier tools).
How should I make the proper 90 degree joint between the sides and the top? I'm wondering if the glue will work since one side is melamine but the edge of the side where it will seat is not. I would like to avoid using L brackets because they would be visible if you look underneath.
Based on the thickness (3/4") and the material (melamine on both sides, but not on the edges) what would you suggest to use? Wood screws? Wood glue plus nails? I'm not sure if wood screws would damage the wood since it's just 3/4". Should I still consider L bracket? Two or just one per side?
I appreciate recommendations!