Jointers are essential in many woodworking projects because of their capability to produce straight edges. However, it’s not a tool one can consider when you’re on a tight budget and have limited space. Lucky for you, there’s a way to make a versatile jointer jig for your table saw. In this post, our resident woodworkers will show you how it’s done.

Tools and Materials You’ll Need

Creating a jointer jig for a table saw requires a different set of materials like three feet long SPF lumber and a 12×24 inch thick-sanded plywood. In all honesty, the size of your plywood should depend on the materials you’ll use for your woodworking project. 

Besides those, we recommend adding glue or two-sided tape to your hardware shopping list during the preparation. These materials will come in very handy in wrapping up the construction process.

After securing a supply of plywood boards, get some wood screws three-quarters of an inch in length and several deck screws around the size of 69.85 mm. Don’t forget to include hex bolt head screws, two pairs of each with wing nuts, lock washers, and flat washers as well. 

screws and tools on table

Make sure that you have at least a 60-inch of wood stock, and each scrap piece from it should be sized ¾ by ⅜  inches to create uniform boards. 

Once you’re done putting each material in your working space, the next step is to check if you have the right equipment to build this tool. Of course, it’s a no-brainer that you should have a table saw. On top of that, our team suggested adding two quick-release toggle clamps, an open-end wrench, and a drill with twist-point bits in your tool list. 

To measure and mark your lumber and plywood boards, having a pencil and measuring tape is essential. Crafting a jointing jig also needs versatile tools like a fixed base router that comes along with a router table and a straight-cutting router bit. 

How to Make a Table Saw Jointer Jig

Step #1: Measure Your Jointer Jig Based on Your Table Saw

The first step in making a jointer jig for table saws is to adjust your measurements according to the size of your cutting tool. Pro-tip, your scrap plywood should be cut as wide as the slots in your table saw. Using measuring tapes and pencils, mark the surface of the fence three-quarters of an inch away from the edge of the board.  

marking measurements on wood

The accuracy of this jointing jig construction relies on properly setting up your tools as well. Your fixed-base router should be mounted on the router table, and our resident DIYers urge you to adjust the bit’s height ⅛ inches over the surface of the table.

Since your table saw jointing jig needs two 1×6 slots, you can make them one inch each on every edge of the board. It would also make sense to set the rip fence at least 1-inch away from the bit’s edges. 

Step #2: Trim the Runner and Sled

Using the board or plywood you have on hand, you’ll need to craft a sled-like piece of wood that’ll act as your guide strip. Remember that the runner and sled are an essential part of your jointing jig, so this step needs extra attention. 

Cut your sled according to the size of your table saw, which you marked earlier. For us, we decided to line our sled 40-inch in length and 10-inch in width. Since the sled is used to adjust and tighten the lumber in position, our team decided to make the sled slightly bigger than the runner. 

Tape Measure

The sled attached to your jigs should slightly be at least the same size as the boards you’ll joint as it adds ease and convenience during the table saw operations. As for the runner, you can cut it with the saw blade the same length as the jointer sled but make it wider by three inches. 

Step #3: Drill Holes on the Runner

The next procedure on making a jointer jig for table saws is cutting holes on the runner to keep it attached with the sled on the last step. Using the pencil mark you drew earlier, position your router bit to drill a hole. 

Repeat the first slot cuts on the other side of the board before raising the bit for another ⅛ inch and cutting four slot cuts. Kickbacks are very likely, so our tool experts suggest keeping it slow and steady when you press the end grain against the table’s fence.   

On the lower edge of the jig board, you should cut two 0.5 diameter holes as well. Now that the slot cuts are done, these holes are ready to be screwed in. 

power drill

Lay the board over the base, 6-inch away from each edge and 2.5 inches from the right edge of the plywood. And then, get your pencil and draw a mark on the left edge of the slots under the plywood. 

After that, put away the upper board and start drilling on the left edge you marked earlier. The hole should be at least 0.5 inches.

Step #4: Cut Straight

Before attaching the toggle clamps, you should trim the excess bits on the edge of your plywood base. Let the saw blade run over the wood stock to make it straight because it’ll allow the bolts to sit better on the plywood’s surface and enable zero clearance. Once the jointing jig is assembled with bolts, wing nuts, and washers, you can clamp it up on the next step. 

Step #5: Attach The Runner

Attach the guide strips using double-sided tape or glue-ups to fully assemble your jointer jig. From the left side of the saw blade up to the right side of the opposite miter slot, that’s where it should be located. 

There will be two clamps drilled with screws at the upper part of your jointer jig. Our team advises you to add scrap stock pieces under its pads for easier clamp adjustment. 

jointer jig clamp

The wood you’ll be using in your projects has different thicknesses [1], so you need to attach quick-release toggle clamps in your makeshift jointer for a safer cutting operation. 

Through the stock pads under the clamps, the pieces that you’re working on will be held securely. It will prevent the clamps from being torn off the table saw jointer jig. 

Once the clamps are in place, cut a 5-feet stock and put it below the plywood base. It should glide through the table saw bed. Adding this little touch will allow your saw to cut smoothly. 

How to Use a Table Saw Jointer Jig

After building a jointer jig for table saws, you ought to know how to use it for jointing wood stock into a perfect square. First, position the piece you want to cut onto the clamps. If you made its pads adjustable during the DIY process, you could narrow or widen its grip to accommodate materials with distinct thicknesses. 

hands on a jointer jig

Once the stock is locked into the right position, start the saw to get the blade moving and give you the straight cut output you’re looking for. We don’t advise standing at the rear of the blade during the operation because that’s how kickback causes accidents. 

For cutting the opposite side of the board, you can get a perfectly square output by using the table saw rip fence and removing the jointer jig. 

More table saw accessory options: 

FAQ

How long should a jointer jig be?

A jointer jig should be at least around eight to ten feet long in size. Like creating a tapering jig, the length of your jointed-edge tool highly depends on the overall size of your table saw and the materials a user intends to use for the cutting operation. 

Conclusion

Cutting a straight edge in longer boards using a simple table saw without a jointer is a risky and time-consuming process. This is why crafting your DIY jointer jig for table saws is a great investment for your workshop to save space and time. With this, we’re sure that you can work on different materials without worrying if your cutting tool can handle it. 

Robert