"I am not driving forty minutes to that custom shop just to get overcharged for a piece of glass," Leo muttered. He pulled out his laptop. He’d never bought online before, but he was about to find out if it was a genius move or a recipe for a box of glittery shards. Step 1: The Measurement

Leo cleaned the new glass with a microfiber cloth and a tiny bit of ammonia-free cleaner. He dropped it into the frame. Clink.

He landed on a specialty glass site. He was hit with options: Cheap, but reflective.

He grabbed a metal ruler. He knew the cardinal rule of framing: He measured the "rabbet"—the little lip inside the frame where the glass sits. It was exactly 11" x 14". He double-checked. Then he triple-checked. One sixteenth of an inch too large, and it wouldn't fit; too small, and it would rattle. Step 2: Choosing the "Type"