You attach a vacuum to the top right side. Dump your materials into the top left hole. Heavy seeds drop out the bottom left side, leaves and scraps get pulled up into the right side.
You attach a vacuum to the top right side. Dump your materials into the top left hole. Heavy seeds drop out the bottom left side, leaves and scraps get pulled up into the right side.
You attach a vacuum to the top right side. Dump your materials into the top left hole. Heavy seeds drop out the bottom left side, leaves and scraps get pulled up into the right side.