The pipe should be long enough to go through the wheels (as the axle) and leave a margin of 1/2 inch on each side to fit the PVC 90°elbows. Cut the pipe, fix it through and glue the elbows.The holes should be large enough for the PVC to go through and the spreader to turn without resistance. Drill a hole at the center of the wheels where the PVC pipe will pass.Ensure the wire is well stretched over the wheels and fastened to prevent the compost from leaking.Overlay the wire gauge on the frame as you staple it around the wheels.The measurement above will leave a margin of one inch on each side. The wire should be enough to overlay the frame.
Once you’re through with the frame, it should be able to roll freely on the floor.Fit the next wheel on the other side of the wood planks (you may need an extra hand for this).Take one of the wheels and fit the three wood planks with the wood screws.The holes should be 2 1/2 inches from the wheels’ circumference. Drill the screw holes at the marked points on each wheel.Place the paper on the wheels, extend the lines to the circumference, and mark the three points.If it’s tricky working with a protractor, print this image here.Mark on the circumference of each wheel three points, 120 ° angle from the center.Since we’re making a 31 inches compost sifter, the wood planks will be 30 inches, and the 1-inch will be of the two plywood wheels (1/2 inch each). The three wood planks help to agitate the compost as the spreader turns and, at the same time, act as the support frames. Mark out two circles on the plywood, 10 ft radius, and cut them. The above measurement is for a 31 inches spreader. The measurements will depend on the size of the spreader you want. 3 (2 by 2 inches) wood planks, 30 inches long wood screws.You can get a bigger gauge for compost, but if you’re spreading peat moss, this one will do. A 33 ft long cage wire, 1 by 1/2 inch plug.
A 4 by 2 ft plywood or MDF (1/2 inch thin).
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