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How to Build a Tool Storage Cabinet

Home/Resources/Power Tools & Workshop/Tool Storage Cabinet
PA
Written & researched by Priya Anand DIY & Tools Editor
Updated August 2026
Over-the-shoulder view of a person drilling into a timber board on a workbench, sawdust in the air, in warm late-afternoon light

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A wall-hung tool cabinet is a satisfying intermediate build that clears your bench and protects your tools. From a sheet or two of 3/4-inch plywood it takes a weekend and costs roughly 80 to 200 dollars in materials (2026), using a saw, a drill, and a few clamps. Nothing structural or permitted is involved. The two things that make it solid are a proper back panel (which keeps the box from racking) and a French cleat to hang it — a 45-degree ripped strip that hooks the cabinet to a wall-mounted mate and carries the load into the studs.

How to Build a Tool Storage Cabinet (This Old House)

Tools and materials

Wide view of a person drilling into a timber board on a workbench, sawdust in the air, in warm late-afternoon light

Step 1: Cut the carcass parts

A typical shop cabinet is 30 to 36 inches wide, 24 to 30 inches tall, and 8 to 12 inches deep. Cut two sides, a top, a bottom, and any fixed shelves from 3/4-inch plywood, all to the same depth. Cut straight and square — a cabinet shows every off cut in its corners and doors.

Step 2: Assemble the box square

Glue and fasten the top and bottom between the sides to form a box, using pocket screws or screws through the sides. Before the glue sets, measure both diagonals and adjust until they’re equal — that means the box is square. A carcass that’s even slightly out of square will fight you on the doors and the cleat later.

Overhead view of a person drilling into a timber board on a workbench, sawdust in the air, in bright midday sun

Step 3: Add the back to lock it square

Cut a 1/4-inch plywood back to the full outside dimensions and glue and screw it across the rear, checking square as you fasten. The back panel does real structural work — it stops the loaded cabinet from racking into a parallelogram. Never leave it off a wall-hung cabinet.

Step 4: Make and mount the French cleat

Rip a board at 45 degrees down its length to make two mating cleats. Screw one half to the back of the cabinet near the top, bevel facing up and in. Find the wall studs, level the mating cleat, and screw it into the studs with the bevel facing up and out. Hook the cabinet’s cleat over the wall cleat — it locks itself down and spreads the load. This is what lets one person hang a heavy cabinet.

Golden-hour view of a person drilling into a timber board on a workbench, sawdust in the air

Step 5: Fit shelves, doors, and tool holders

Add shelves, then hang doors on solid hinges if you want them — the inside faces are prime real estate for pegboard or small French cleats that hold hand tools. Customize the interior to your exact tools with dividers and holders. Because it’s your build, every inch can be fitted to what you own, which is the whole advantage over a store cabinet.

Where to go next

An enclosed cabinet complements an open pegboard tool wall and a rolling tool cart for tools you move around. It all sits above your workbench under the power tools and workshop hub.

We never buy or physically test the tools we rank — our picks come from aggregated owner reviews and expert consensus, explained on how we rank.

Straight Answers

Frequently Asked

What is a French cleat and why use it for a tool cabinet?

A French cleat is a strip of wood ripped at a 45-degree angle down its length, cut into two mating halves — one screwed to the wall, one to the back of the cabinet. The cabinet's cleat hooks over the wall cleat, and gravity plus the angle lock it in place while spreading the weight along the whole strip. It makes hanging a heavy loaded cabinet a one-person job, holds enormous weight when the wall cleat is screwed into studs, and lets you lift the cabinet off to relocate it. It is the standard way to hang shop cabinets.

How thick should plywood be for a tool cabinet?

Use 3/4-inch plywood for the carcass (sides, top, bottom, shelves) so it holds weight and takes fasteners well, and 1/4-inch plywood is fine for the back panel and lightweight door panels. Birch or maple plywood is stiff and strong; avoid particleboard, which sags under tool weight and strips out screws. A loaded tool cabinet can carry a lot of weight, so the 3/4-inch structure and a solid back are what keep it from sagging or pulling apart.

How do you keep a cabinet from racking?

Add a back panel. An open box of four sides will lean into a parallelogram (rack) under load or when hung; a 1/4-inch plywood back screwed and glued across the whole rear face triangulates the box and locks it square. Check the carcass for square (equal diagonals) before you attach the back, so it's locked in true. The back panel is doing structural work, not just closing the box — never leave it off a wall-hung cabinet.

Should a tool cabinet have doors?

Doors keep dust off your tools and, on the inside faces, add a huge amount of shallow storage — French cleats or pegboard on the door backs hold hand tools where you can see them. They add work and weight, so make sure your hinges and the French cleat are rated for it. If you want simplicity, an open cabinet with shelves and pegboard works fine and costs less. Many shop cabinets use doors specifically to double the tool-holding surface with organizers on the inside.

How much does it cost to build a tool cabinet?

A wall-hung shop tool cabinet from one or two sheets of plywood costs roughly 80 to 200 dollars in materials (2026), depending on plywood grade, hinges, and hardware. That is comparable to a cheap steel cabinet but far more customizable — you size it to your wall and fit the interior to your exact tools. A comparable pre-made wood or steel wall cabinet of the same capacity runs more, and won't have your custom tool holders inside.