Apples and X-Rays

Rick and his team have a chance to restore an extremely rare department store x-ray machine from the 1940s used to fit shoes. Can Rick put his best foot forward to safely service this radiation discharging device from head to toe or will this item prove to be too hazardous to everyone's health? And later, a first grade teacher brings in a mechanical apple corer and peeler from the 1880s. Will the crew take a bite out of this project and make the grade or will one rotten apple spoil the bunch?