Stair tread minimum thickness

[Sean Rainaldi]

If you are using risers you can use 3/4" white oak and you will not need a third stringer. I would laminate the front 1 1/4" to look like a full thickness treads, which by the way is 1 1/32". Round the front over with a 1/2" round over bit................

...How about using 5/8" white oak treads - instead of 3/4", and laminating the front edge of the WO tread on the underside (for the one inch over hang) to the 1 1/32" thickness by gluing another layer of 1" wide WO under the extended part of the tread for the bullnose?

Would 5/8 provide enough strength for the 1" overhang?

The WO treads are on top of 3/4" baltic birch plywood sub treads...

I was thinking about just gluing up to a 10" width with the 5/8 WO and on the bullnose edge glue the 1" layer on the underside of one edge then route that edge for the radius......