Thank you all for the nice comments.
Barb, the GF HP poly is one of my favorite finishes. I apply it with a foam brush, and it levels to a smooth finish. I also like how quickly it dries—I can apply multiple coats in a day. I’m going to add a blog post about the finishing step. I did have some problems with the combination of the poly with the dye that I’ll describe there.
I know that Splint, Pottz, and Barb replied to my forum post about slab door battens. I think you can see why I was so concerned about the doors cupping or twisting. They were a ton of work, and I don’t want to have to rebuild them with veneered MDF or edge-banded plywood to keep them flat.