Larger foot for Cedarcraft raised garden bed

This is a larger foot for Cedarcraft raised garden beds (& possibly other brands), designed to fit the aluminum corner extrusions and better spread the weight across a larger area. Channels and a recess are included on the bottom so minimal water is trapped under each foot. The hole in the bottom is designed to align with the threaded caster mounting hole on each leg, and fits an M8 bolt. An optional plastic M8 bolt is included to attach the feet: it's rust-free, though more fragile than a metal one would be.