How to use a table saw as a jointer
Not everyone has the budget or the space for a jointer and sometimes even experienced woodworkers prefer to use a table saw to straighten out wood if it’s especially gnarly. Here’s how to use your table saw as a jointer to get a straight edge on stock.
- Purchase a readymade jig that provides adjustability
- Create a custom jig for your own needs
Because the width was 12”, I used two of these t-tracks that are inlaid in the plywood sheet. If you increase the width of your jig, you’ll need to make sure you have enough t-track for the entire width.
Things You Should Know
- Only use this jig for edge jointing. Face jointing should not be done on a table saw.
- This jig measures approximately 30" x 12" and will fit most jobsite saws. These measurements are flexible.
- This jig may also be used to cut tapers
- A list of all the tools and materials needed can be found at the end of this article.
How to make a table saw jointer sled



1. Cut your board to size and put the miter slot runner on
I used 3/4" Baltic birch plywood and and cut it to approximately a 30" x 12". I went ahead and aligned the runner so that the edge was right up next to the blade. If you want a true zero-clearance cut line, place the runner so that part of the board overhangs past the blade and cut it later.

2. Cut the dados for the aluminum t-track
Set the blade of your table saw or circular saw to the height of the t-track. This cut will cut the depth of the slot that the t-track will sit in. If you have a blade with a flat-top tooth grind, use it here.
I used a CMT ATB combination blade, which did not clear a flat channel for the t-track. I will go back and clean this up later with a chisel.


3. Cut the dado slots
I measured the width of the t-track to 18.94mm. Approximately 6" in from each edge of the jig is where I made the first mark for the dado slots.
I marked off the width of the dado slots and made my first two cuts. You will want to intentionally be a little narrow with these first two cuts so you can creep up to the 18.94mm width and the t-track will fit snugly.



4. Dial in the dado channel width and clean it up
As mentioned in the previous step, I left the channel a little narrow so I could creep up on the actual width. Since I used an ATB tooth blade, I'm taking a chisel to clean up the little bit of wood the remains in the dado slot.
Repeat the dado cut for the other side.

5. Screw down the t-track
With the dado slots cut for the t-tracks, lay the t-tracks in and screw them down with wood screws.

Materials and Tools Needed
Materials
- Miter slot bar
- A ¾” piece of sanded plywood - I’m using baltic birch
- Two miter slot t-tracks that will cover the width of your plywood
- Two screwdowns for the t-tracks
Tools
- Table saw
- Circular Saw (optional)
- Straight edge

A table saw doesn’t replace a jointer
- You can’t face joint a board with your table saw, nor should you try.
- The accuracy of an edge cut on a jointer will be difficult to match on a table saw.
- Other variances like blade quality, flatness of table top, and other factors will affect the cut quality
With the above method being explained, this doesn’t mean that your table saw can entirely replace a jointer. Every table saw, especially job site saws, will be off by some degree when cutting the edge of the board. While you can likely get by with this imperfection on a single board, being off a little here and a little there will add up for larger projects.
Don’t rely on this as a long term solution for projects.