I know Burl Rice cast his own bricks and made modular walls, but does anyone have any other ideas on how to do brick walls? I've used Precision Plastic sheet, but the problem is corners, where you wind up with a gap, because the plastic doesn't go around the corner. Since I am contemplating a brick engine house, which has several exterior reinforcing columns (all with corners), I'm wondering if there's another way to make bricks. From plaster, by carving each one with a scribing device? Any ideas?