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How to make wooden gymnastic rings. You will need 2 square pieces of marine plywood. The thickness must be 30mm and the dimensions 250mm x 250mm each. Pencil Ruler Compasses Jigsaw Drill Sandpaper Lacquer (Optionally) Draw to both sides of the plywoods 5 concentric circles by using the compasses. The radiuses of the circles should be: 90mm, 100mm, 105mm, 110mm and 120mm. By using the jigsaw, cut along the outline first. Then use the drill to make a hole near the inside line, so you can pass the blade of
