An outfeed table catches material as it exits the table saw, preventing boards from tipping off the back and pulling the cut off-line. Without one, ripping a full sheet of plywood solo is dangerous and inaccurate — the sheet drops off the back of the saw, the cut pinches, and kickback becomes a real risk. Building an outfeed table that also serves as an assembly surface makes the most of your shop space and gives you a flat, stable work surface for glue-ups, finishing, and layout work.

Build a Table Saw Outfeed Table

Critical Dimension: Height

The outfeed table surface must be exactly the same height as your table saw top, or up to 1/16 inch lower. If the outfeed table is higher, material catches on the leading edge and disrupts the cut. If it is more than 1/8 inch lower, long boards droop and can lift off the saw table during the cut.

Measure from the floor to the table saw surface with the saw on its final surface (concrete slab, rubber mat, mobile base). Write this number down. Every other dimension of the outfeed table builds from it.

Common table saw heights: The DeWalt DWE7491RS sits at about 32 inches. The SawStop Contractor saw is 34 inches. Ridgid R4513 sits at 33.5 inches. Measure yours — do not assume.

Materials List

For a 48 x 36 inch outfeed table on casters:

Two 2x4 studs, 8-foot (frame and legs)
One sheet 3/4-inch MDF, cut to 48 x 36 inches (top)
One sheet 3/4-inch plywood, cut to 48 x 36 inches (lower shelf)
Four 3-inch heavy-duty locking swivel casters
2.5-inch pocket hole screws or 3-inch deck screws
Wood glue
Paste wax

Estimated cost: $45 to $65 depending on local lumber prices.

Building the Frame

Legs

Cut four legs from 2x4 lumber. Calculate leg length as: table saw surface height minus 3/4 inch (MDF top) minus caster height (typically 3.5 to 4.5 inches for 3-inch casters). This math puts the MDF surface exactly level with the saw table.

Example: If your saw table is 34 inches high, and casters add 4 inches, leg length = 34 - 0.75 - 4 = 29.25 inches.

Frame Assembly

Build a rectangular frame from 2x4 rails:

Two long rails at 48 inches (front and back)
Two short rails at 33 inches (sides — accounting for the doubled 2x4 leg width)

Attach rails to legs using pocket hole joinery or lap joints with glue and screws. Pocket holes are faster and produce a clean exterior. Alternatively, use heavy-duty corner brackets bolted through the frame — less elegant but completely rigid.

Add a mid-span support rail across the 48-inch direction at the center to prevent the MDF top from sagging under heavy loads.

Lower Shelf

Install a lower shelf at 6 to 8 inches from the floor. Use 3/4-inch plywood resting on 2x4 cleats screwed to the inside faces of the legs. This shelf adds significant racking resistance to the frame and provides storage for sheet goods, clamps, or finishing supplies.

Installing the Top

Use 3/4-inch MDF for the outfeed surface. MDF is the right material here for three reasons: it is reliably flat out of the box, it provides a smooth surface that material slides across without catching, and it is cheap enough to replace when damaged.

Attach the MDF from below by driving screws up through the frame rails into the underside of the top. This keeps the top surface completely smooth with no exposed screw heads to catch workpieces or scratch finishes.

After mounting, apply two coats of paste wax (Johnson’s Paste Wax or Minwax) to the entire top surface. Buff with a clean cloth between coats. This creates an extremely slick surface that plywood and lumber glide across effortlessly. Reapply wax every few months as it wears.

Adding Mobility

Mount four locking swivel casters to the bottom of each leg. Use 3-inch or 4-inch polyurethane casters rated for at least 100 pounds each. Bolt them through the leg bottoms with 1/4-inch carriage bolts, washers, and lock nuts — do not rely on screws alone.

With casters, the table rolls behind the saw for rip cuts, then repositions anywhere in the shop. Lock all four casters before feeding any material through the saw. A table that rolls during a cut is worse than no table at all.

Upgrading to a Torsion Box Top

For an absolutely flat surface that resists warping in humidity changes, build a torsion box:

Cut two sheets of 1/4-inch Baltic birch plywood to the table dimensions (48 x 36 inches)
Build an internal grid from 2-inch wide strips of 1/2-inch plywood, spaced 6 inches apart in both directions. Glue the grid joints where strips cross.
Glue and clamp the bottom skin to the grid. Let it cure overnight.
Flip and glue the top skin to the grid. Clamp with every clamp you own — even pressure is critical.

A torsion box is lightweight, extremely stiff, and stays dead flat for decades regardless of seasonal wood movement. It is the premium option and adds about $30 in materials over the simple MDF top.

Dual Purpose: Assembly Table Features

When the outfeed table is not serving the table saw, it becomes the shop’s primary assembly surface. A few additions make it far more useful:

Bench dog holes: Drill a grid of 3/4-inch holes at 4-inch intervals along two edges of the top. These accept holdfasts and bench dogs for securing workpieces during assembly, sanding, or hand planing.

Sacrificial surface: MDF dents, stains, and absorbs glue. When the surface gets too damaged, unscrew the top from below, buy a fresh half-sheet of MDF ($15 to $20), cut to size, wax it, and screw it in place. Fifteen minutes and you have a new work surface.

Measurement reference: Mark a measuring tape along one edge of the table using a fine-point Sharpie and a steel ruler. This gives you a quick reference for checking board lengths without reaching for a tape measure.

T-track option: Route two parallel T-track slots across the top for fences and stops. This turns the outfeed table into a secondary work surface for crosscutting with a circular saw and straightedge.

Sizing Considerations

The ideal outfeed table is large enough to fully support a 4x8 sheet of plywood exiting the saw. That means at least 48 inches wide and 36 inches deep (behind the blade). If your shop layout allows 48 x 48, even better — you gain full support for sheet goods and a larger assembly area.

If space is limited, even a 24 x 48 inch table makes a meaningful difference in safety and cut quality. A narrow outfeed table catches the material and prevents the tipping that causes kickback. It is far better than no outfeed support.

For shops where a permanent outfeed table is not practical, build a folding version: hinge the top to a wall-mounted cleat and support the free end with folding legs. Deploy it for rip cuts, fold it up when done.

Bottom Line

An outfeed table is a safety essential for any table saw setup and the most-used work surface in the shop the rest of the time. A 2x4 frame, MDF top, and locking casters cost under $60 and take a Saturday morning to build. Get the height exactly right, wax the surface, and add bench dog holes along the edges. You will use it during every single shop session from the day you build it.