Remodeling our TV room, I wanted to give it a little pizzazz. I've always wanted to do a drywall arch, but never had the opportunity. Here it is.
I formed my arch with plywood sandwich a 2x4. The actual arch is simply small chunks of 2x4 cut up and glued in place.
Each segment is perhaps 1.5 inches long. I glued them across the entire archway on one plywood sheets with the arch already cut out with a jig saw.
With that plywood and glued-arch assembly, I simply attached the mating half of plywood.
Arched corner bead is nice to work with. I simply stapled it into my wood arch area.
No picture, but mudding the arch was simple, too. I used the good bonding mud that dries pretty hard, and it's turning out real nice.