How It's Made Season 32 Episode 1 Electrophoretic Displays, Dry Erase Boards, Air Rifles, Quartz Countertops ( Air Date 2019-02-10 ) Genre Documentary category. Overview "lexible films are layered with microscopic electronic components and electronic ink to create thin electrophoretic displays. Porcelain-coated steel is bonded to a rigid backing for dry-erase boards, compressed-air mechanisms are assembled and accuracy-tested in air rifles, and quartz is mixed with resin and decorative materials before being moulded, cured and polished into countertops.".