Build a Rolling Tool Cabinet

Plywood. That's what most professional shop cabinets start with, and what yours will start with too. A rolling tool cabinet isn't furniture—it's working infrastructure that needs to take abuse, hold weight, and move smoothly across concrete that's never quite level. The difference between a cabinet that lasts twenty years and one that sags in two comes down to internal structure and slide quality. This build uses full-depth drawer boxes, proper divider placement, and locking casters rated for the load. You'll end up with something heavier and more capable than anything under $800 at the big-box stores. The key decision is drawer configuration. Five drawers is the sweet spot—three shallow ones up top for hand tools and fasteners, two deep ones below for power tools and bulky items. Go deeper than eight inches on bottom drawers and you'll never see what's in back. The cabinet rolls on four swivel casters, two with locks, positioned to distribute weight evenly. Build it 36 inches wide to fit standard drawer slides without modification, and 34 inches tall so the top surface works as a secondary workbench. The whole thing breaks down into manageable cuts from three sheets of plywood.

1. Cut all panels precisely. Break down two sheets of 3/4-inch plywood into cabinet panels: two sides at 34x24 inches, top and bottom at 36x24 inches, and back panel at 36x34 inches from 1/2-inch plywood. Cut the five drawer fronts at 34x varying heights (three at 4 inches, two at 8 inches). Use a circular saw with a straightedge guide or have the lumberyard make the cuts—precise rectangles matter more than perfect edges here since drawer fronts will cover most visible surfaces.
2. Build the main box. Drill pocket holes along the edges of top and bottom panels, then attach them to the side panels using 1-1/4 inch pocket screws and wood glue. Square up the box by measuring diagonals—they should match within 1/8 inch. Attach the back panel with 1-1/4 inch screws every 6 inches around the perimeter, which locks in the square and adds critical racking resistance. The back panel sits flush with all edges.
3. Install level dividers. Cut four horizontal dividers from 3/4-inch plywood at 34x22 inches. Mark their positions inside the cabinet at heights that create your drawer openings (spacing them at 5, 10, 15, and 24 inches from the bottom works well). Attach dividers with pocket screws from inside the cabinet sides, keeping them perfectly level—drawer slides demand level mounting surfaces. These dividers become the mounting points for your slides, so verify they're rigid with no flex.
4. Build five drawers. Construct five drawer boxes from 1/2-inch plywood: sides at 22 inches deep, fronts and backs 1 inch narrower than the drawer opening width. Assemble with glue and 1-inch brad nails, then attach 1/4-inch plywood bottoms. Each drawer should be 1 inch narrower and 1/2 inch shorter than its opening. Install full-extension drawer slides on both cabinet dividers and drawer sides, following the manufacturer's spacing specs exactly—usually 1/2 inch from bottom edge of drawer box.
5. Add locking casters. Flip the cabinet and install four 3-inch locking swivel casters at corners, inset 2 inches from each edge. Use 1/4-inch lag bolts into the plywood bottom, adding fender washers for load distribution. Mount locking casters on the front for easy access. Stand the cabinet upright, load the heaviest drawer, and test roll on your garage floor—it should move smoothly without tipping, even with weight in the top drawer.
6. Install drawer fronts. Cut drawer fronts 1/2 inch wider than drawer openings to create overlap. Position each front with 1/4-inch spacing on all sides using pennies as spacers, then clamp and attach from inside the drawer box with 1-inch screws. Start with the bottom drawer and work up, using the installed drawer below as a spacing reference. Drill handle holes and install pulls after all fronts are mounted—measure from drawer edges, not from cabinet, to keep placement consistent.
7. Seal and line drawers. Sand all exposed surfaces to 150-grit and apply two coats of polyurethane or garage floor paint—this isn't about looks, it's about cleaning up oil and protecting against moisture. Let dry completely between coats. Line drawer bottoms with rubber tool-drawer liner or heavy felt—this prevents tools from sliding and protects both the drawer and your tools from damage.
8. Load and test. Install drawer dividers in shallow drawers using 1/4-inch plywood strips cut to height and friction-fit across the width. Place frequently-used hand tools in top drawers, power tools in bottom drawers with cords wrapped. Keep weight distributed evenly side-to-side—a cabinet loaded heavy on one side will steer poorly and stress the casters. Test the drawer action fully loaded before declaring the job done.