This simple jig makes laying out circles a breeze. Drill a 1/8-in. hole through every inch mark on a ruler or yard-stick. To draw a circle, place a pin through the number “1” into the center of your board. Add 1 in. to the radius of the circle you wish to draw, and insert a pencil into this number. Using the pin as a pivot, rotate the pencil to mark the circle. — Edwin Constantino. How to Cut Curves in Wood

There are a few things particleboard is NOT. It’s not medium density fiberboard (MDF)—a material with greater density and weight composed of more uniform particles. It’s NOT oriented strand board (OSB), a material composed of large wood chips and strands that’s structurally equivalent to plywood. It does NOT have great nail or screw holding ability, nor is it all that water resistant; water can quickly cause the material to swell and lose structural integrity. But if you need something flat and cheap for use in a dry place, particleboard will do you proud. Learn how to make a plastic laminate tabletop with a particleboard substrate.
Here’s a safe and sound way to make long cuts with a circular saw on plywood clamped to a worktable. Cut about 12 in. into the plywood, then twist a piece of duct tape into a bow tie, with up-and-down adhesive faces. Slide it in the saw kerf and press the tape down above and under the plywood. Now as you finish the cut, the trailing end can’t curl down dangerously as you saw. Hats off to Mike Connelly for simplifying this job. Check out how to make this DIY duct tape wallet.

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I agree with all of these tips in a larger shop. In a smaller shop (mine is just under 400-square feet) most things are fairly close together anyway. One of my original principals for shop layout was … how is a machining process performed on a piece of wood? Is the wood stationary while it is machined … or does the wood move through the machine? If the wood is stationary, I have tried to have this set for one side wall of the shop. To be specific, I have four machines in one line with a continuous table to support long pieces that might need cutting from one or all of those machines. The machines in that line are (from left to right) the drill press, the powered miter saw, the square-chisel mortiser and the radial arm saw.
Electricity. It’s a rare workshop today that doesn’t need electricity; most need multiple receptacles of high amperage (20 amperes or more). Are there plugs available or will you need to add new lines and circuits? If you need to add wiring, when laying it out keep in mind that there’s no such thing as too many outlets in a workshop. The fewer (as in, ideally, zero) extension cords the better; they’re safety hazards. A good minimum is to have receptacles set at no more than six-foot intervals around the perimeter of the room, and, if possible, flush-mounted floor plugs in the central area.
Next come two options for the table saw’s trusty sidekick, the jointer, as well as for the thickness planer. Because it’s usual to work between all three tools when dressing lumber, the first option, shown in the illustration, locates the jointer nearest the saw to the right of its extension table with the planer nearby. As with the table saw, it always makes sense to align these tools with the shop’s long axis.