Cut Your First Hand-Cut Dovetail with a $15 Saw

For this weekend’s project, make a small open-top box with hand-cut through dovetails. It is useful for keys, screws, teabags, or the mysterious collection of pocket junk that accumulates near every front door. More importantly, it teaches you a joint that is strong, handsome, and just fussy enough to make you feel like a wizard when it works.

You’ll need two pieces of straight-grained hardwood for the sides, each about 3/8 inch thick, 3 inches wide, and 10 inches long; two pieces for the ends, the same thickness and width, but 5 inches long; and a thin plywood or solid-wood bottom. Expect to spend $15–$25 on lumber, less if you have scraps. Tools are a fine-tooth backsaw or dovetail saw, a sharp pencil, marking knife or utility knife, combination square, small chisel, coping saw, mallet, clamps, and wood glue. A $15 backsaw is perfectly serviceable. A dull saw is not.

Start by squaring one end of every board. Mark a baseline across the end grain of each piece, 3/8 inch from the edge. This line is the floor of your dovetails; do not cut past it. On the two side pieces, mark three tails: two near the edges and one centered. A simple layout is to make each tail about 3/4 inch wide, with gaps of roughly 3/4 inch between them. Use a bevel or scrap of cardboard to mark the angled sides. Keep the angle modest—about 1:6 for softwood or 1:8 for hardwood. Dovetails are not auditions for a cathedral carpenter.

Cut the tails first. Hold the saw just to the waste side of each line, leaning along the marked angle. Cut down to the baseline, then remove the waste between the tails with a coping saw. Pare down to the baseline with a sharp chisel, taking whisper-thin cuts. Clean, flat surfaces matter more than speed.

Transfer the tail shape onto the end pieces by standing the tail board on the end grain and tracing around it with a marking knife. Darken the waste areas, then cut the pins carefully. Saw just inside the lines and remove the waste with a coping saw and chisel. Test-fit often. The joint should require firm hand pressure, not a heroic mallet attack.

The beginner’s most common mistake is cutting on the wrong side of the line. The pencil or knife mark belongs to the finished wood; the saw kerf belongs in the waste. Leave the line visible until you have cut and then pare precisely to it. If you remove the line, you have made the joint larger, and glue cannot put that wood back.

Once the corners fit, glue the box, clamp it gently, and slide the bottom into a shallow groove or simply glue it beneath the box. Ease the sharp edges with sandpaper, apply a finish, and admire the tiny wooden miracle. Your second dovetail will be better. Your tenth will be suspiciously good.