Here are a couple of cell phone pics that show the new backer board (left) and the new hex tile all thin - setted into place (right): (theletteredcottage.net)
I used a thrifted, chunky frame and had Home Depot cut the same kind of backer board for me. (jonesdesigncompany.com)
HOWEVER, the hubs installed the tile and knows that there is concrete backer board with screws every 2 inches holding it to the underlayment and is not pleased with the thought of ripping it out. (theletteredcottage.net)