This is a 50 inch wide by 9 deep shelf. It is scaled to be cut in 7/16" stock.
Easel for back panel and supports. Print first. http://easel.inventables.com/projects/GdeOmHpor8poRyEWxLjpyg
Easel for back panel detail. Print second, without moving the first part.
http://easel.inventables.com/projects/LFh_8RBUhil-ZLIHuLVS1w
Easel for top:
http://easel.inventables.com/projects/g_leEzFpZtBgwQokeZpb2g