I've been asked to make some stair treads for a daughter. Being ones available at the big box stores (oak or oak veneer) are too short in length, I'm exploring purchasing oak boards from which to make them to size. The oak boards will be finished to about 1" thick, 11" wide, about 36" long (+/-). My question is should I rip, alternate grain, and glue to avoid the treads from warping (regardless of the width of the oak boards)? If so, how wide should the strips be? The only way to fasten them to the stair risers to avoid fasteners showing is using constructive adhesive.