In April, I returned to Cincinnati and began building the bed that would house the worms. I looked at a myriad of designs and decided to base the bed on the "Continuous Flow Through" systems commonly found in other worm casting operations. The bottom of the bed is composed of grates, allowing the worm castings to fall through during harvesting. (We shall see how well this goes in the fall!). One other essential element is the shape of the bed. It will be constructed in a loop. Throughout the year the worms will migrate around the loop, following the fresh food waste and leaving worm castings behind.