What's inside
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This chest is a useful step up from a basic box: the lid needs to stay aligned, the tray must fit without binding, and the corners need to hold together under the weight of stored gear. A finished size of about 24 inches wide, 14 inches deep, and 16 inches high gives you room for blankets, games, or hand tools without making the chest awkward to move.
The plan below uses 3/4-inch plywood for the case, solid wood for the trim, a loose tray, and a full-length piano hinge. It suits a woodworker comfortable making square cuts and drilling accurately. Allow a weekend for construction, plus drying time for glue and finish.
Contents
Materials and dimensions
Build the case from 3/4-inch cabinet-grade plywood. The dimensions below are outside dimensions; adjust them if your sheet stock or storage needs differ. With 3/4-inch sides and ends, the front and back pieces fit between the sides.
| Part | Quantity | Cut size | Notes |
|---|---|---|---|
| Front and back | 2 | 24 × 15 1/4 in | 3/4-in plywood |
| Sides | 2 | 12 1/2 × 15 1/4 in | 3/4-in plywood |
| Bottom | 1 | 22 1/2 × 12 1/2 in | Fits inside the case |
| Lid | 1 | 24 × 14 in | 3/4-in plywood or solid panel |
| Tray bottom | 1 | 21 1/2 × 11 1/2 in | 1/4-in plywood |
These case dimensions produce a roughly 16-inch-high box once the 3/4-inch bottom is fitted inside the walls. Make the tray sides from 1/2-inch stock, about 2 inches high. Cut the tray bottom only after checking the assembled case: plywood thickness and squareness can vary enough to make a nominally correct tray tight.
You will also need wood glue, 1 1/4-inch screws, a piano hinge about 24 inches long, and sandpaper in 120- and 180-grit. A 24-inch piano hinge spreads the lid load along the back edge. For a heavy lid, add a lid stay or support; a hinge alone does not prevent the lid from falling shut.
Tools and design choices
A circular saw with a straightedge can cut the panels accurately; a table saw is convenient but not essential. A drill-driver, clamps, square, and tape measure are the other basics. If you do not own a pocket-hole jig, simple butt joints with glue and screws are adequate for a utility chest. Pocket holes hide fasteners, but they do not fix poor alignment or replace careful clamping.
For visible edges, apply solid-wood edging or iron-on veneer tape. Solid edging is tougher if the chest will take knocks, but it takes longer to fit and sand. Veneer tape is cheaper and fine for indoor storage where the edges are not likely to be hit. A roll of iron-on edge banding is a reasonable choice for a painted or lightly used chest.
Assemble the case
Cut the front, back, sides, and bottom, then mark each part so you do not reverse a panel during assembly. Check every cut against a square. A 1/8-inch error at a corner may seem minor, but it can leave the lid visibly out of line and make the tray catch.
Join the front and back between the side panels. Drill pilot holes to reduce splitting, apply a thin, even coat of glue to each joint, and clamp the case square before driving screws. Measure diagonally from corner to corner in both directions; the measurements should be equal. If they differ, ease the longer diagonal inward before the glue sets.
Fit the bottom inside the walls, flush with their lower edges. Use glue and screws around the perimeter, keeping the screw heads below the surface. Wipe away squeeze-out while it is wet. Let the case dry, then sand the edges smooth. Do not use extra glue to fill a gap: a wide, uneven joint is a sign to recut or shim the part before assembly.
Make and fit the tray
Measure the inside width and depth of the finished case at the top. Subtract about 1/8 inch from each measurement for the tray’s outside dimensions. That clearance lets the tray lift out even if the case swells slightly with seasonal humidity. In a dry shop, a closer fit may work, but a tray that binds is frustrating and can scrape the case.
Glue and pin or screw the four tray sides around the 1/4-inch bottom. Keep the sides square and make sure the bottom sits flat. Sand the corners, then test the tray before applying finish. If it catches, identify the tight spot and sand that edge lightly; avoid shrinking the whole tray unnecessarily.
Fit the lid and hinge
Center the lid on the case and mark its position. Leave a small, even gap—about 1/16 inch—along the sides and front so the lid does not scrape when wood movement or finish changes the fit. Attach the piano hinge with the lid supported flat and the hinge knuckle positioned just beyond the rear edge. Drill pilot holes for every screw, especially near plywood edges, where a screw driven without a pilot can split a veneer layer.
Open and close the lid several times before finishing. If one corner lifts, check the case for square and the hinge for a straight installation; forcing the lid down with longer screws usually makes the problem worse. Add a lid stay or a simple support chain if the lid is heavy or the chest will be used around children. A soft-close stay costs more, but it limits sudden slams; for a light lid used occasionally, a basic mechanical stay is usually enough.
Sand and finish
Sand the plywood faces with 120-grit, then 180-grit. Plywood veneer is thin, so do not keep sanding to remove a deep scratch; you can cut through the face layer. Break sharp corners with a few light passes. Vacuum the dust and apply the finish according to its label. A water-based clear finish keeps the color light, while paint hides mixed materials and small repairs. Test the finish on an offcut first, since plywood edges absorb differently from the faces.
For a chest used to store clean fabric or papers, let the finish cure fully before loading it; “dry to touch” is not the same as fully hardened. If the chest will sit in a damp garage, seal the inside and underside too, and keep it off a concrete floor with small feet or a base. That will not make plywood waterproof, but it reduces moisture exposure at the most vulnerable surfaces.