Worm bins are an ideal way to make compost for your garden. The worms in a composting bin can eat your vegetable and fruit scraps and turn it into a nutrient-rich material. However, a compost bin must be set up correctly for it to work efficiently. There must be holes in the bottom of the bin to allow soil drainage. More importantly, there need to be holes in the top to provide airflow for the worms.
Flip the container over on its side. Position it so you stare straight at the bottom of the container when you sit in a chair.
Mark the spot for your first hole in the bottom left corner of the container. Measure up two inches from the bottom, and in two inches from the side. Make a dot at this intersecting point with a marker. Repeat the process for the remaining three corners.
Measure the distance from the bottom left corner to the bottom right corner. Put three evenly spaced dots in between these two corners.
Repeat the process from the top left to the top right corner. You should now have two identical rows of dots. Don't worry if the spacing isn't perfectly even.
Measure the distance from the bottom left corner to the top left corner. Put two evenly spaced dots between the two corners. The dots should now make a "C "shape.
Move over to the second dot from the left on the bottom row. Line it up with the dot second from the left on the top row and make two evenly spaced dots between them as you did in the previous step.
Repeat the process, moving one dot over at a time until you reach the right side of the container. The finished result should have 20 evenly spaced dots.
Drill a hole on each dot with a 1/4-inch drill bit. Again, the spacing doesn't have to be perfect, but it should be close.
Repeat the process with the lid of the container, but drill the holes with a 1/8 inch drill bit instead.