Why build a cart instead of buying one
A rolling cart lets you bring tools to the job instead of walking back and forth to a wall or bench. A shop-built cart can also be sized to the tools you actually own, fit a specific gap beside the bench, and be repaired with ordinary materials. The trade-off is time: a simple cart takes a weekend, and a cart with drawers takes longer.
This article gives the overall plan. Drawer construction and shelf or bin layout each have their own details, so here the focus is on the frame, the materials, the wheels and the order of work.
Decide what the cart will carry
Start with a list, not a drawing. Set out the tools that will live on the cart and note the largest and heaviest items: a benchtop machine, a case-style drill kit, a box of hand tools. The tallest item sets shelf spacing, and the heaviest item sets how strong the frame and wheels must be.
Also decide where the cart will work. A cart that parks beside the workbench is often built to the same height as the bench top, or slightly below it, so it can double as an outfeed or assembly surface. Standard bench heights vary with the user, so measure your own bench rather than relying on a general number. Our notes on workbench height explain how to match a surface to your body.
Choosing dimensions
Dimensions depend on your space and your doorways, but a typical starting point for a general-purpose cart is hypothetical but workable:
- Length: about 30 to 36 inches
- Depth: about 18 to 24 inches
- Height: matched to your bench, commonly in the 32 to 36 inch range, including the casters
A deeper cart holds more but is harder to turn in a tight shop. A cart that is much taller than it is wide becomes top-heavy, especially when the upper shelf carries heavy machines. Keep the heavy items low.
Check that the cart will fit through the narrowest door or gap it needs to pass, with a little room for your hands.
Materials
Most carts are built from one of two materials, or a mix of both.
Plywood and other sheet goods. A good-quality plywood in roughly 3/4 inch thickness is common for sides, shelves and the top. It is stable, flat and strong for its weight. Panel types behave differently among common sheet goods; for a cart that will be moved and bumped, plywood is usually preferred over particleboard, which can crumble at screw points and edges. Because full sheets are awkward to handle, cutting plywood into manageable pieces is often the first step, and doing it safely and cleanly is covered separately.
Dimensional lumber. Framing lumber works for a simple frame with a plywood top. Pick straight boards and check for board warping before you buy, since a twisted frame will leave one caster off the floor. If the boards have just come from a store or yard, letting them sit in the shop first, as described under lumber acclimation, reduces surprises after assembly.
Whatever you choose, plan on fasteners that suit the job. Pocket holes are a common, beginner-friendly way to join a plywood and lumber frame, and glue plus screws gives a stiffer result than screws alone. If you want to use stronger methods, wood joinery options such as dado joints work well for fixed shelves in plywood sides.
Casters
Casters matter more than most builders expect. Points to consider:
- Size. Larger wheels roll more easily over cords, small debris and floor seams. Casters of about 3 to 4 inches in diameter are common for shop carts.
- Swivel and rigid. Four swivel casters make a cart easy to steer. Some builders use two rigid and two swivel casters for straighter travel, but that makes tight turns harder.
- Locks. At least two casters, and ideally all four, should have brakes. A cart that drifts while you use a machine on it is a safety problem.
- Load rating. Each caster has a rated capacity. Estimate the total loaded weight of the cart and its contents, then choose casters whose combined rating comfortably exceeds it. Because floors are rarely perfectly flat, the load does not always spread evenly across all four wheels, so leaving generous margin is sensible.
- Wheel material. Harder wheels roll easily but can be noisy and may mark or slip on some floors. Softer wheels grip better and are quieter.
Mount casters to a solid base or plywood plate, using bolts through the material where possible rather than short screws alone.
A simple build sequence
- Draw and list. Sketch front and side views and write a cut list with finished sizes. Account for the real thickness of plywood, which can differ slightly from the nominal size.
- Cut the parts. Cut sides, shelves and top, using clamps or a straight guide for accurate, tear-free cuts. Wear eye and hearing protection, and use dust control when cutting panel materials.
- Dry fit. Assemble the pieces without glue to check squareness and fit. Checking square is worth a few extra minutes here.
- Pre-drill and assemble. Make pilot holes before driving screws, particularly near panel edges, and apply glue to the joints. Clamp, check diagonals for square, and let the glue set.
- Add the base and casters. Fasten a base frame or plate to the underside, then mount the casters. Flip the cart upright and test it on the floor with a load.
- Finish. Sand edges so they will not snag clothing or skin, then apply a finish. A simple coat of a wipe-on or brush-on clear finish protects the wood from spills and moisture. Follow the manufacturer’s instructions for the finish you choose, including ventilation and the safe handling of oily rags.
- Add the details. Fit edge lips or rails to keep tools from sliding, then add hooks, a power strip mounted to the side if you wish, or drawers if your plan includes them.
Safety and stability checks
Before you load the cart, push on it from the side and the corners. It should not tip easily, and it should not rack. Keep heavy tools on the lowest shelf, lock the wheels before using a machine on top, and never use the cart as a ladder or step.
If you plan to run power tools from the cart, keep cords tidy and unplug anything before changing blades or bits. This is general information; follow the manuals for your own tools and equipment.
Adapting the plan
Once the basic frame works, you can extend it. A drawer, covered in its own project, adds closed storage for small items. Shelves, bins and cubbies suit a cart that holds larger tools, and are laid out best around the tools you own. A cart that is simple, stable and sized to your shop will usually serve you better than an elaborate one that is hard to move.