The lady wanted a planter box for her rose trees. So we bought some cedar planks from home depot and got to work. Before taking this on, I calculated the length of each link to give us the octagon of the size we wanted. Then we got to cutting the cedar to form the links. Once we had those, we cut pilot holes along the sides of each link. These holes would hold metal rods, that reinforce the wall. I also put in pocket screws for additional strength. The base of the planter is made of plywood. Once we had the planter box put together, we sprayed the planters with water proof sealent, and then covered the interior surfaces with landscaping fabric.
Step 1: Cut the Links
Cut the links in T shape. I pre-drilled pocket screw holes along one edge.
Step 2: Drill Holes for Metal Rods
Drill holes for metal threaded rods on the side of each link.
Step 3: Insert Threaded Rods
Cut threaded rods into 2" pieces. Insert rod pieces into cedar links.
Step 4: Join the Links
Join the links in a layer. Once you have a number of layers, join the layers via pocket screws.
Step 5: Apply Waterproof Sealer
This wood would be exposed to the elements, so we added a thick layer of polyurethane sealer to protect it.
Step 6: Landscape Fabric
Line the inner walls of the planter box with landscape fabric. I used a stapler to hold the fabric in place. I also cut strips of softwood and lined the edge walls (over the fabric), to hold the sheet in place.
Step 7: Add Soil and the Plant
What it says :)