DIY Table Saw Outfeed and Infeed Extension Table Build with Full Dimensions

A table saw is one of the most useful machines in any workshop, but cutting long boards without proper support can quickly become unsafe and inaccurate. Boards tip, sag, and pull away from the fence, leading to rough cuts and dangerous kickback situations. That is exactly why a good outfeed and infeed extension table makes such a huge difference. Access over 16,000 woodworking plans

This DIY wooden extension table setup is designed to give your table saw a larger and more stable working surface without taking up permanent space in the workshop. The folding side tables sit perfectly flush with the saw surface and extend the total cutting support length to around 1400 mm while keeping the width at approximately 570 mm and the working height at 900 mm. When the job is finished, the tables fold down or break apart easily for storage.

This is a simple and affordable project that dramatically improves the way your table saw performs.

Why Build an Extension Table?

Most portable and contractor table saws have very limited support around the blade area. Once long timber passes beyond the saw table, the weight of the board begins to drop, making it harder to control the cut.

An extension setup solves several problems:

Supports long boards during ripping
Improves cutting accuracy
Reduces the chance of kickback
Makes sheet goods easier to handle
Prevents material from tipping off the back of the saw
Adds workspace without replacing your saw

Even a basic wooden extension table can make a small table saw feel much more professional.

Overall Dimensions

The design can be adjusted to fit different saws, but these dimensions work well for most compact workshop setups.

Part	Dimension
Total extended length	1400 mm
Table width	570 mm
Working height	900 mm
Main frame thickness	70 to 90 mm
Folding wing depth	300 to 450 mm
Leg spacing	500 to 700 mm
Top thickness	18 to 25 mm plywood

The most important measurement is the height. The extension surface must sit perfectly level with the table saw top.

Materials Needed

This project uses inexpensive and easy-to-find materials.

Wood and Sheet Material

18 mm plywood for table surfaces
38 x 89 mm timber for framing
Hardwood strips for edge reinforcement
Scrap wood for braces and supports

Hardware

Folding hinges
Wood screws
Bolts and washers
Locking nuts
Folding leg brackets or gate hinges
Adjustable feet (optional)

Tools Required

Circular saw or miter saw
Drill and drill bits
Measuring tape
Clamps
Carpenter square
Sander

Building the Main Support Frame

Start by measuring the exact height of your table saw surface from the floor. Build the extension frame so the top aligns perfectly with that measurement.

Construct a rectangular frame using timber strong enough to prevent sagging. Cross braces underneath the top help keep the surface rigid and flat over time.

The frame should attach securely to the table saw stand or base. Some builders bolt directly into the saw frame while others use removable brackets for easier transport.

A strong base is important because even slight movement affects cutting accuracy.

Making the Tabletop Surface

Cut the plywood top panels to size and test-fit them against the saw.

The surface should:

Sit flush with the saw table
Stay perfectly flat
Extend smoothly behind and in front of the blade area

Many builders laminate the top or apply polyurethane for a smoother sliding surface. Waxing the finished top also helps wood glide across more easily during cuts.

Rounded edges help prevent boards from catching while feeding material through the blade.

Folding Infeed and Outfeed Wings

The folding side sections are what make this design practical for smaller workshops.

Heavy-duty hinges allow the wings to fold down when not in use. Support legs swing out underneath to carry the weight of larger boards.

For extra strength:

Use diagonal braces on folding legs
Install locking hinges
Add removable support pins if needed

The folding design keeps the workshop compact while still providing full-length support during cutting operations.

Adjustable Leg Supports

Uneven workshop floors can make extension tables wobble. Adjustable feet solve this problem easily.

Threaded furniture feet or bolt-style levelers can be installed under the legs to fine-tune the table height.

Proper leveling ensures:

Smooth material feeding
Better cut accuracy
Reduced vibration
Safer operation

Even a few millimeters of misalignment can affect long rip cuts.

Optional Upgrades

Once the basic extension table is finished, several upgrades can make it even more useful.

Storage Shelf

Add a lower shelf underneath for push sticks, blades, and measuring tools.

T-Track System

Install aluminum T-tracks for clamps and jigs.

Router Insert

One wing can double as a router table.

Roller Supports

Rollers help support extremely long boards and sheet goods.

Dust Collection Port

Add a dust hood beneath the outfeed area to improve cleanup.

Safety Tips

An extension table improves safety, but proper setup still matters.

Always:

Keep the extension perfectly level
Check folding hinges regularly
Use push sticks when cutting narrow material
Avoid standing directly behind the blade
Support large sheets with additional rollers if necessary

A stable work surface helps maintain full control throughout the cut.

Final Thoughts

This DIY table saw outfeed and infeed extension table is one of the best upgrades you can make for a workshop. It transforms a small saw into a far more capable cutting station while keeping costs low and construction simple.

With a total support length of 1400 mm, a width of 570 mm, and a comfortable working height of 900 mm, this setup gives you the stability needed for smoother, safer, and more accurate cuts. The folding design also makes it ideal for garages and compact workshops where space matters.

For woodworkers who regularly cut long boards or sheet material, this build quickly becomes one of the most useful projects in the entire shop.

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