How to Make a Compost Bin
By Mark & Theresa Clement
If the value of a project is measured in how often you use it, our compost bin is well near the top of the list. If measured like the Olympics, it’d consistently be on the medal stand.
It’s a project that you can have up and running in a day, turning coffee grinds and toilet paper rolls into terrific topsoil.
We used twelve 2x6x8 Western Red Cedar boards. The material is naturally rot-resistant and chemical-free. Plus, it looks great and stays looking great for years. We fastened everything together with coated deck screws.
Cut the Pieces
Our compost bin is five individual rectangular boxes stacked together with a 3/4-in. gap in between. Each box has an outside dimension of 36 by 24 inches. To make that work, cut the front and back pieces 36 inches and the side pieces 21 inches. We added a detail that makes our bin less “boxy” by alternating each box’s end-grain, lending a pleasing “box-joint” look to the corners.
Next, cut the staves. The staves are the internal vertical supports that hold the individual boxes together. We ripped a 2X6 in half on the table saw, then cut them to length at 30-3/4 inches.
The top is four pieces of 2X6 at 36 inches. It’s held together by two 2X6 struts cut at 20-3/4 inches. We also beveled the ends of the struts so the lid sits inside the bin a little easier during use.
Assemble the Pieces
Assemble the boxes and, before driving all the screws tight, make sure the box is as square as possible then send the screws home. Next, fasten a stave in each corner as square as possible to the body of your bottom box.
Add the next box. Use 1-by spacers on each corner to gauge accurate spacing and fasten. Keep adding boxes and spacers.
Note: To access the compost, we fastened the bottom two boards from the face of the bin. That way we can take them off and dig out from below, where the best compost will typically be.
Assemble the lid. Again, use spacers. Hold it all together with the 2×6 struts fastened to the underside of the lid. Be careful not to overdrive the screws so they poke through the finished side. We used 2-1/2-in. screws here.