No assembly necessary. Just print the hook once, the plug twice, and then affix to a wall with drywall screws. Insert the decorative plugs to hide the screw heads.

The overhang is just at the end of what I can print without support. It may warp a little bit, but it tends to warp towards the wall where you can't see it.

Printing at 1:1 will make a sturdy hook in ABS, but will muddy the details a bit. The photo is a 1:1.5 print.

Flagrant stagecraft alert: although it is fairly fancy, the Hook, +1 is incapable of levitation. It's taped to a piece of acrylic for the photo.