Cut Your First Dovetail Box With a $15 Saw

Make a small open box with four sides joined by through dovetails. It’s a useful project, a handsome way to practice, and small enough that you won’t lose interest halfway through a board. Use 1/2-inch-thick poplar if you want predictable results; pine works, but its soft earlywood bruises easily. One 1-by-6 board, 24 inches long, should be enough for a box roughly 6 inches long, 4 inches wide, and 3 inches tall. Expect to spend $15 to $25 on wood and supplies if you already own basic tools.

You’ll need a fine-tooth backsaw or Japanese pull saw, a sharp 1/4-inch or 3/8-inch chisel, a marking knife, combination square, pencil, small hammer, clamps, and a flat sanding block. A handsaw with a straight back is perfectly acceptable. The saw does not need to be fancy; your layout matters more than its price tag.

Cut four pieces: two “pin boards” for the front and back, and two “tail boards” for the sides. Make all four exactly the same height and ensure their ends are square. Mark a baseline across the inside face of each board, 1/2 inch from the end. This line represents the depth of the joint. Scribe it with a knife, then deepen the groove lightly with the chisel. Do both ends of every board.

Start with the tail board. Mark two tails, each about 3/4 inch wide, leaving a 1/2-inch pin between them. A 1:6 slope is friendly for softwood; a 1:8 slope looks a little more refined. Carry the marks across the end grain and down the face of the board. Shade the waste so your tired Saturday brain knows what to remove.

Saw down the angled lines, stopping exactly at the baseline. Remove the waste with shallow chisel cuts, working from both faces toward the middle. Do not try to chop the entire depth in one heroic blow. Pare the surfaces flat, then use the finished tail board to mark the pins on the end of a pin board. Knife directly against the wood; pencil marks are too fat for this job.

Here is the mistake nearly every beginner makes: sawing on the keeper side of the line. The saw kerf has width, and it eats the wood you meant to keep. Always cut into the waste, leaving the knife line visible on the finished piece. Also stop at the baseline—sawing past it creates a gap that no amount of optimism can fill.

Cut and chop the pins, then test-fit the joint. It should require gentle taps, not a wrestling match. If it is tight, pare the shiny high spots with the chisel. When all four corners fit, glue them with ordinary wood glue, clamp lightly, and check the box for square by measuring diagonally corner to corner. Add a thin plywood bottom in a groove or simply glue one underneath. Sand to 180 grit, ease the sharp edges, and apply wax, oil, or varnish.