In article ,
"BetaB4" wrote:

Thanks all.

I didn't know what corbels were, but I did a Google search and found out.
That may be an option. I'll look at the job again and keep that in mind as
a possibility.

The idea the two layers of 3/4" plywood may not be enough wasn't something
that I had thought about. But, maybe I'd be better off doing 3 layers just
in case. I may even look a little better with the edge being a little
thicker.

Some mentioned "CD" but I don't know what that is.

I'm assume that no one thinks the issue of plywood possibly cupping a little
when it dries out as being an issue. Someone mentioned that to me so I
thought I'd check in case that was a common opinion. Sounds like it isn't.


Well, we have a range of opinions, as usual. Personally, I think two
layers of 3/4 ply is plenty strong enough. Assuming the wall is robust,
and the ply is screwed to it with a sufficient quantity of the correct
screws, I think you could stand on the cantilevered edge without
breaking anything.

CD is construction grade plywood. Lots of knotholes. AC is standard
finish grade, with few knots on the A side, all of which have been cut
out and filled.