The Solid Light Factory was a factory that was run by Pendulum Depot, a rival of Gart Default. The factory was a direct competitor of the Blinking Light Factory, owned by Gart Default. For years, Depot wanted to grasp the Blinking Light formula, but never could, thus explaining why his factory could only produce Solid Lights. The factory was ultimately destroyed as a result of Depot trying to recreate Blinking Lights while inadvertently using the Exploding Light formula from Robot Default, Gart Default's younger brother.