I built this wall mount thing (~ 3ft wide, 1/2" poplar) hung with a cleat (oak):
The problem is, I don't like the way the cleat looks. I think it looks sloppy. But, I want the piece to be backless, and flush to the wall. I also don't want to paint the cleat to match the wall -- I don't mind painting the wall side of it, but I don't want to paint the side attached to the piece.
I don't see myself putting more than 15 lbs of stuff on here but I'd like it to support 50 if possible.
Are there any wall mount options that aren't visible?
I'm not necessarily limited to modifying this piece, I'm also looking for options for future reference in new pieces.