Round picnic tables make a great addition to any garden. A round picnic table with seats can be built in a day. Although it does take some know-how, nearly anyone equipped with a step-by-step plan and the right tools and supplies is capable of building a round picnic table.
Construct the table top by placing as many 1.5 m x 3.8 cm (60 inch x 1 1/2 inch) pieces of wood on the floor side by side as necessary to reach a width of 1.475 m (59 inches).
Apply centre support by placing a piece of 2,5 x 5 cm (1 x 2 inch) material across the centre of the side-by-side pieces. Fasten this piece to the first piece of the table top with a 5 cm (2 inch) screw. From the opposite side, press all the boards together and fasten the other end of the support to the end piece with another 5 cm (2 inch) screw. Fasten the centre support to each board with 5 cm (2 inch) screws.
Fasten a 3.8 x 4.4 cm (1 1/2 x 1 3/4 inch) board at a distance of 62.5 cm (25 inches) from the outer edge. Use two 5 cm (2 inch) screws, one on each side of the centre support.
Mark the centre of the table top. Use a 1.5 m (60 inch) long piece of scrap material to draw a line with a pencil from corner to corner. Draw a 1.475 m (59 inches) circle by nailing the board's end to the centre point and making a mark at the edge 73.75 cm (29 1/2 inches) from the centre. Rotate the board around the nail while maintaining the pencil's position at the 73.75 cm (29 1/2 inches) pencil mark. Round the table by cutting along the line.
Build the legs by cutting 5 x 10 cm (2 x 4 inch) pieces 1 m (40 inches) long and mitre saw the ends to a 45-degree angle. Attach the legs to the centre support with 15 cm (6 inch) long 1 cm (3/8 inch) lag bolts.
Build the Seats. Cut four 5 x 7.5 x 45 cm (2 x 3 x 18 inch) pieces and use a mitre saw to cut the ends at 30-degree angles. Cut a piece of wood 34 x 80 cm (13 1/2 x 32 inches), this will be the top of the seat. Now fasten two legs at a 60-degree angle to each end of the 34 x 80 cm (13 1/2 x 32 inches) piece with 1 cm (3/8 inch) lag bolts. Repeat this process for each additional seat.
Counter sink the screws to prevent future cuts and scrapes.