Build A Simple Mobile Workbench

This workbench can double as an outfeed table for your SawStop table saw

Crafting the mobile workbench
Every woodworker, whether a weekend hobbyist or a seasoned professional, knows that the heartbeat of any workshop is the workbench. It’s the surface where raw materials are transformed, where precision layouts are drawn, and where assembly takes place. However, a static, monolithic bench can sometimes become an obstacle in smaller or evolving shop layouts.
Thomas Gojkovich, aka Thomas Custom Woodworks, designed and built this workbench for use in his shop with his SawStop Professional Cabinet Saw. This heavy-duty, highly mobile, and storage-packed workbench uses readily available—and affordable–materials like standard 2×4 construction pine lumber and 3/4-inch plywood, making it an accessible project for builders of any skill level.

1. Core Features and Design Philosophy
   Before a single blade touches wood, Thomas outlines the specific features that make this particular design stand out from standard shop tables:
   • Total Mobility: Supported by four heavy-duty, 3-inch lockable casters, the bench can seamlessly glide across a shop floor to adapt to different tasks (such as acting as an outfeed table for a table saw) and lock firmly in place when stability is paramount.
   • Integrated Storage: Rather than leaving the lower footprint open to collect sawdust, the design integrates a custom-built cabinet housing three generously sized drawers.
   • Ingenious Safety Stops: A standout feature of the build is a set of shop-made wooden drawer stoppers that prevent the drawers from being accidentally pulled completely out of the frame—saving your tools, your project, and your toes from disastrous drops.
   • Referential Measurement: Rather than relying strictly on a rigid, unchanging blueprint where a 1/16-inch error early on ruins downstream components, Thomas heavily utilizes referential measurement. By holding new pieces up to the already-assembled structure to make layout marks, the build inherently accounts for minor real-world variations.

2. Laminating the Heavy-Duty Work Surface
   The foundation of a good workbench is mass and flatness. To achieve a rigid, durable top without spending hundreds of dollars on thick hardwood slabs, the project utilizes a smart lamination technique. Thomas cuts down two pieces of 3/4-inch plywood to identical dimensions of 24 inches by 48 inches. To bond them into a singular, ultra-solid 1-1/2-inch thick top, the pieces are thoroughly coated in wood glue and clamped together using an array of 40 construction screws (1-1/4 inch).
   A great piece of shop economy is demonstrated here: using the screws as temporary clamps. Once the wood glue fully dries, all 40 screws are backed out and saved for future projects, leaving a solid plywood slab entirely free of metal fasteners that could potentially damage router bits or saw blades later on.

3. Building the Leg Structures and Faux Half-Laps
   Leg construction can often be intimidating due to the complex joinery required to prevent the table from racking (swaying side-to-side under lateral force). This build circumvents complex machining by using layered 2×4 pine to create “built-up” half-lap joints.
   Cutting the Pieces
   Using a miter saw equipped with a repeatable stop block to guarantee uniform lengths, the lumber is broken down:
   • 4 Main Legs: 2x4s cut to 27-3/4 inches.
   • 4 Short Additional Legs: 2x4s cut to 7 inches.
   • 4 Long Additional Legs: 2x4s cut to approximately 13-3/4 inches (verified via referential marking).
   • 4 Horizontal Leg Supports: 2x4s cut to 21-1/4 inches.
   Assembly
   The short and long 2×4 leg pieces are glued and clamped directly flush onto the face of the main 27-3/4 inch legs. By strategically leaving gaps at the very top and near the bottom of these laminations, the builder creates natural recesses—effectively mimicking traditional machined half-lap joints.
   The 21-1/4 inch horizontal support pieces are then nested perfectly into these recessed pockets and secured using 2-1/2 inch construction screws. To speed up assembly, an impact driver is utilized, though the video demonstrates that a traditional drill works just as well provided you recess the screw heads and drill pilot holes to prevent splitting.
   Pro Tip from the Video: To prevent screwing casters directly into weak end-grain wood, Thomas uses glue and CA glue (with an accelerator) to attach a small block of 1×4 pine to the bottom of each leg. The CA glue cures instantly to act as a temporary clamp while the stronger wood glue dries.

4. Framing the Base with Pocket Joinery
   With two independent leg frame assemblies completed, they must be linked together to form the 3D chassis of the workbench.
   Thomas cuts four 2×4 stretchers to 39 inches on the miter saw. Using a pocket hole jig, he bores two pocket holes into each end of the stretchers. To make assembly a solo job, 2-inch spacer blocks are placed under the lower stretchers to hold them perfectly uniform from the ground while they are clamped and driven home with 2-1/2 inch pocket hole screws. The upper stretchers are mounted perfectly flush with the top of the leg assemblies.
   To finish the skeleton of the base, Thomas spaces and secures six cross-supports (roughly 14-1/4 inches) using pocket screws across both the top and bottom tiers, maximizing the frame’s resistance to twisting forces.

5. Finalizing the Tabletop and Base Integration
   With the base framed up, he removes the screws from the dried plywood tabletop. He secures the 3-inch casters to the reinforced leg bottoms using 1-1/2 inch cabinet screws.
   Next, the table saw and a circular saw, guided by a straight-edge, are used to trim exactly 1/8-inch off all four sides of the laminated tabletop. This cleans up any dried glue squeeze-out and guarantees perfectly square, flush edges. Thomas then glues hardwood or plywood border trim pieces around the perimeter.
   Finally, the base is flipped upside down onto the underside of the clean top, aligned to leave a uniform 2-inch overhang on all sides, and permanently anchored down using eleven 2-1/2 inch construction screws.

6. The Custom Tool Cabinet & Drawer Stops
   The lower half of the bench is enclosed with a custom 3/4-inch plywood cabinet insert. The top and bottom panels are cut to 39 inches long by 19-3/4 inches wide, while the interior vertical dividers and outer sides are machined to 7-1/2 inches deep.
   To hide the 1/4-inch plywood back panel cleanly, he cuts a 3/8-inch deep rabbet (a groove cut into the edge of a board) into the back edges of the cabinet carcass using a table saw equipped with a sacrificial fence. The assembly is glued and screwed together, leaving three identical 12-inch wide drawer bays.
   Money-Saving Wood Slides
   Skipping expensive metal drawer slides, Thomas cuts twelve 1-inch wide by 16-3/4 inch long strips of 3/4-inch plywood to serve as internal runners. Using a custom 1-5/8 inch spacer block, he glues these wooden runners to the top and bottom of each drawer bay.
   The Gravity Drawer Stoppers
   To implement the safety stop catches, he mounts three 1-inch wide by 12-inch long horizontal plywood stretchers across the top front of the cabinet openings. Attached to these stretchers are small, rotating wooden tabs (“stoppers”) with rounded top corners.
   When a drawer is pushed in, it pushes past these tabs. But when the drawer is pulled outward, the back wall of the drawer catches against the hanging wooden stoppers, preventing the drawer from falling out. To remove a drawer intentionally, you simply reach inside, rotate the tabs upward out of the way, and slide the unit free.

7. Drawer Construction, Playing Card Trick, and Finishing
   Thomas constructs the three drawer boxes using classic butt-joints and 3/4-inch plywood, featuring a 1/4-inch wide dado (groove) cut near the bottom edges to house a floating 1/4-inch plywood floor. To keep things clean, they are assembled with specialized small-profile trim-head screws.
   The Playing Card Shimming Trick
   Achieving a perfectly uniform gap (reveal) around drawer faces is notoriously difficult. Thomas shares an incredible shop hack: fitting the drawer face into the opening and jamming standard playing cards into the gaps on all four sides.
   By ensuring an equal number of playing cards are wedged on the top, bottom, left, and right, the drawer face is perfectly centered. Two temporary cabinet screws are driven from the front directly through the target location of the final drawer handles. The drawer is pulled out, permanent screws are driven from the inside of the box into the back of the face, the temporary front screws are removed, the holes are widened, and the final utility handles are bolted on.
   The Grand Finale
   To wrap up the project, all sharp edges are broken with a sanding block to prevent splinters or cuts. Finally, a protective coat of General Finishes Satin Armor Seal wipe-on urethane is applied to shield the wood from shop moisture and stains while making the grain pop beautifully.
   This mobile workbench layout strikes a perfect harmony between ruggedness, budget-conscious material choices, and clever microengineering. By tackling this project, you not only gain a highly functional asset for your workspace, but also sharpen fundamental skills in lamination, pocket joinery, and referential design.