How to Build a Workbench
To build a workbench, choose the height (34–38 in, about your wrist height), build a rigid base, either a 2x4 frame with a lower shelf or a plywood cabinet with a full back, and screw a double layer of 3/4 in plywood or MDF on top. The base must not rack when you push or saw: a back panel or diagonal braces stop it. A garage workbench is usually 36 in high, 24–30 in deep and 6–8 ft long.
Plan the size
| Measurement | Typical | Notes |
|---|---|---|
| Height | 34–38 in (86–97 cm) | About your wrist height; see workbench height |
| Depth | 24–30 in (61–76 cm) | Deeper than 30 in is hard to reach across |
| Length | 4–8 ft (1.2–2.4 m) | As long as the wall allows |
| Top thickness | 1 1/2 in (38 mm) | Two layers of 3/4 in board |
| Overhang | 2–4 in at the front and ends | For clamping work to the top |
Two ways to build it
| Compared | 2x4 frame | Plywood cabinet base |
|---|---|---|
| Cost | Lowest | A little more |
| Time | An afternoon | A day |
| Stiffness | Needs braces or a back | Cannot rack |
| Storage | Open shelf | Shelves, doors or drawers |
| Best for | A quick garage bench | A shop bench that lasts |
Building a 2x4 workbench
Building a workbench out of 2x4s is the cheapest way to a solid bench:
- Cut four legs to the bench height minus the top (34 1/2 in for a 36 in bench with a 1 1/2 in top).
- Build two rectangular frames from 2x4s, the size of the top minus the overhang: one for the top, one for the lower shelf about 6–10 in off the floor.
- Screw the legs inside the corners of both frames with 3 in screws, checking that the frames are square and level.
- Add a back panel of 1/2 in plywood, or diagonal braces, to stop racking.
- Fix the top: two layers of 3/4 in plywood glued and screwed together, then screwed to the frame from below.
- Add the shelf of 3/4 in plywood on the lower frame.
Building a plywood workbench
Build the base as a cabinet: two sides, a bottom, a divider in the middle and a full 3/4 in back, all from 3/4 in plywood, glued and screwed. The back and divider make it rigid in every direction; shelves inside hold tools and cases. Screw the double top to the base from inside, overhanging at the front and the ends. Our workbench plan works out every part from the length, depth and height you type:
Garage workbench tips
- Bolt a wall bench to the studs at the back: it stays put when you plane or hammer.
- Plan power: a power strip on the back edge or outlets above the bench.
- Add a vise at the left front corner (for right-handers), with its jaws flush with the front edge.
- Use a replaceable top: a 1/8 in hardboard sheet tacked on top takes the glue, paint and dents, and costs little to replace.
- Fit casters with locks if the bench has to move; a heavy bench on locking casters stays put while you work.
Frequently asked questions
What is the easiest way to build a workbench?
A 2x4 frame with plywood shelves and a doubled 3/4 in plywood top: straight cuts, screws, and done in an afternoon. A plywood cabinet base takes longer but is stiffer and holds more.
How high should a workbench be?
About wrist height when you stand with your arms down: 34–38 in (86–97 cm) for most people. 36 in, counter height, is a good default for a garage bench.
What is the best top for a workbench?
Two layers of 3/4 in plywood or MDF glued and screwed together, 1 1/2 in thick, with a hardboard sheet on top you can replace when it gets worn. Solid hardwood or a butcher block is heavier and more durable.
How do you stop a workbench from wobbling?
Brace it: a full back panel, a lower shelf screwed to all four legs, or diagonal braces. A plywood box base cannot rack. Level the feet, and bolt a wall bench to the studs.