What's inside
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This sideboard is a useful step up from a basic cabinet project. It combines a wide, flat case, two sliding doors, adjustable shelving, and tapered legs that must support the cabinet without making it look heavy. The plan below is aimed at an experienced woodworker with a table saw, router, accurate measuring tools, and enough patience to fit doors that slide cleanly.
Contents
Project overview and target dimensions
The finished sideboard is approximately 60 inches wide, 18 inches deep, and 32 inches high, including the legs. The cabinet box is 27 inches high. That height works well in a dining room or behind a sofa, while the 18-inch depth provides useful storage without taking over a walkway.
| Part | Recommended material | Finished size or quantity |
|---|---|---|
| Top | Solid wood or veneered plywood | 60 × 18 × 1 inch |
| Case sides and dividers | 3/4-inch plywood | Two sides plus one center divider |
| Bottom and fixed shelf | 3/4-inch plywood | Fit between the sides |
| Back | 1/4-inch plywood | Approximately 58 1/2 × 26 1/2 inches |
| Doors | 1/2-inch plywood or solid-wood frames | Two doors, about 28 × 23 inches each |
| Legs | Hardwood blanks | Four, approximately 3 1/2 × 3 1/2 × 6 inches |
Use the actual cabinet opening to determine door dimensions. Do not cut both doors from assumed measurements. A case that is 1/16 inch out of square can make a pair of sliding doors bind, especially after finish is applied.
Materials, tools, and buying decisions
For a painted sideboard, cabinet-grade birch plywood is economical and stable. For a clear finish, use furniture-grade oak, walnut, or maple plywood with matching solid-wood edging. Cheap construction plywood often has voids that show at dadoes and can leave a wavy door edge. It is acceptable for a shop cabinet, but not a good shortcut on visible furniture.
You will need a table saw or track saw, router with straight and rabbeting bits, drill, random-orbit sander, clamps, and a reliable square. A digital angle gauge is helpful when setting the saw blade and taper jig, but it is not essential if your combination square and test cuts are accurate.
For the doors, choose a wooden sliding door track hardware set rated for doors heavier than your finished panels. Basic grooved wood runners are cheaper and can work well, but they collect dust and offer no adjustment. Low-profile ball-bearing systems cost more but make alignment easier and reduce sticking.
Build the case square and strong
Break down the plywood with a track saw or a straightedge-guided circular saw before making final cuts on the table saw. Cut the two sides, bottom, center divider, and fixed shelf to identical widths. Label every part immediately; reversing a side can put a dado on the wrong face.
Cut a 3/8-inch-wide, 3/8-inch-deep dado in each side for the bottom. Add a second dado for the fixed shelf if you want the case to resist racking. A rabbet along the rear inside edges accepts the 1/4-inch back. Keep at least 1 1/2 inches of material at the front of each side so the edge does not split during assembly.
Dry-assemble the case with clamps and measure both diagonals. They should be within 1/8 inch of each other, preferably closer. If the diagonals differ, correct the case before fastening the back. The back is not merely a cover: glue and screw it into the rear rabbets with screws spaced 6 to 8 inches apart. This locks the cabinet square.
Install the center divider after the outer box is assembled. Set it so the two door openings are equal, then check that it is parallel with the sides. A divider that leans even slightly can create a tight spot where the doors overlap.
Make and fit the sliding doors
The most reliable advanced option is a pair of plywood panels with solid-wood edging. Apply 1 1/2-inch-wide edging to all four sides using glue and biscuits, splines, or loose tenons. This hides the plywood layers and gives you enough material to trim the doors accurately.
For a traditional wood-track system, rout a groove near the bottom edge of each door and install a matching lower runner. Make the upper guide shallow enough to retain the door without pinching it. Leave approximately 1/16 inch of clearance at each side and 1/8 inch above the lower track. Finish-sand the grooves before assembly; finish buildup is a common cause of stiff doors.
Test each door in the bare cabinet. Slide it through the full travel several times, then remove it and apply finish. Do not assume the track will remain smooth after finishing. Wax the wooden runners lightly, or use the manufacturer’s recommended lubricant for metal hardware. Avoid oil on unfinished wood tracks because it attracts dust.
Cut tapered legs without weakening them
Make the legs from straight-grained hardwood. A 6-inch leg with a 2 1/2-inch square top tapering to a 1 1/2-inch square foot looks balanced under this cabinet. Taper two adjacent faces, not all four, unless you have a specific design reason. Two-face tapers are easier to cut consistently and leave broad surfaces for mounting.
A shop-made taper jig is sufficient; you do not need an expensive specialty jig. Clamp a stop block to repeat the leg position, and make a full-height test cut in scrap first. If the four legs differ by more than 1/16 inch, the cabinet will rock or appear twisted. Mark the inside faces so the tapers remain oriented consistently.
Attach each leg with a pair of corner blocks, bed bolts, or threaded inserts. Simple screws driven into end grain are a weak choice and may loosen as the wood moves. A threaded insert furniture hardware kit costs more than screws but makes the legs removable and reduces the chance of stripped holes.
Finish, movement, and seasonal timing
Sand plywood surfaces to 180 grit and solid wood to 150 or 180 grit. Sanding beyond 180 can reduce stain absorption and make blotching more noticeable. Break sharp exposed edges with one or two light passes of sandpaper.
In a heated winter shop, let the lumber acclimate for at least a week before cutting. In humid summer conditions, allow extra time for plywood and solid edging to reach a stable moisture level. Solid-wood edging must be glued with its grain running lengthwise; never glue a wide solid panel tightly across the plywood case. Leave a small expansion allowance at the back of the top and use figure-eight fasteners or elongated screw holes.
For a durable low-maintenance finish, three thin coats of water-based polyurethane work well and dry quickly. Oil-based polyurethane gives more warmth and open time but may take 24 hours or longer between coats. If painting, use a bonding primer and sand lightly between coats. A cheaper finish is fine on a utility sideboard, but uneven application will show strongly on the broad top and doors, so do not rush those surfaces.
Final adjustment checklist
Before loading the sideboard, confirm that it sits flat, the doors overlap correctly, and the cabinet does not rack when pushed from the corner. Adjust the feet or add thin shims if necessary. Keep heavy dishes on the bottom shelf and distribute weight across the case. Sliding doors hide less usable width than hinged doors, but the center divider and overlapping panels mean only one opening is fully accessible at a time. That trade-off is the price of the clean, space-saving front.