Measure the width and length of the saw and add 2 inches to the measurements. Use a table saw to cut two pieces of 3/4-inch-thick CDX plywood.
Apply wood glue to one piece of plywood. Place the other piece on top and flush them together. Shoot 1 1/4-inch pin nails randomly through the top piece to secure it to the bottom piece.
Measure the length of the doubled-up plywood. Cut four studs to the measurement Measure the width of the plywood and subtract 3 inches. Cut four studs to the measurements, using the leftover pieces from the longer studs.
Place two of the longer studs parallel to each other on their edges. Place the short studs between them, flush at the ends. Staple the frame together, using a staple gun with 2-inch staples. Build an identical frame with the remaining studs.
Stand one 4-by-4-by-30-inch post in each corner of one of the frames. Shoot two staples through each corner of the frame to secure the posts inside the frame.
Flip the frame upside down and stand it upright inside the remaining frame. Shoot two staples through each corner of the bottom frame to secure it to the posts.
Place the doubled-up plywood centered on the frame. Screw the plywood to the top of the frame around the perimeter, using a drill/driver and 3-inch screws.
Place the metal saw centered on the stand. Insert 1/4-by-2-inch lag bolts with washers into the drilled holes in the metal saw base. Drive them into the plywood to secure it to the plywood, using a 1/4-inch socket and 3/8-inch ratchet.
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