How To Make A Tapering Jig For Table Saw

Okay, picture this: me, covered in sawdust, wrestling with a ridiculously long piece of walnut. I was trying to make a cool, angled leg for a mid-century modern side table (you know, the kind with the impossibly chic, yet somehow wobbly, legs). My initial attempt involved a protractor, a pencil, and a whole lot of crossed fingers. The result? Let's just say it looked less "chic" and more "architecturally unsound." After that debacle, I realized I needed a better solution. That's when I discovered the glorious world of tapering jigs. And trust me, they are a game changer.
So, what exactly is a tapering jig? Simply put, it's a device that allows you to safely and accurately cut tapers on your table saw. Think of it as a guiding hand, ensuring consistent angles and preventing your workpiece from doing the cha-cha while you're trying to cut. No more wonky legs or angled mishaps!
But instead of buying a fancy, pre-made one (which, let's be honest, can be surprisingly expensive), why not build your own? It’s a fun weekend project, saves you some cash, and gives you the satisfaction of knowing you built something useful. Plus, you can customize it to your exact needs. Sound good? Let's get started!
Must Read
Why Build Your Own Tapering Jig?
Besides the obvious money-saving aspect, there are several reasons why building your own tapering jig is a fantastic idea:
- Customization: You can tailor the jig to your specific projects. Need a jig that can handle extra-long workpieces? No problem! Want one with a built-in measuring scale? You got it! You are in total control of the design.
- Cost-Effective: As mentioned before, pre-made jigs can be pricey. Building your own allows you to use scrap wood and hardware you might already have lying around. Think of it as a woodworking win-win!
- Skill Building: It's a great way to practice your woodworking skills, from measuring and cutting to drilling and assembling. You'll learn a lot in the process!
- Satisfaction: There's nothing quite like the feeling of using a tool you built yourself. It just makes the whole woodworking experience more rewarding.
Materials and Tools You'll Need
Alright, before we dive into the construction process, let's gather our supplies. Don't worry, you probably have most of this stuff already kicking around your shop. But just in case, here's a list:
Materials:
- Plywood or MDF: This will be the main material for your jig. I recommend using ¾-inch thick plywood or MDF for stability. About 2ft x 3ft should be more than enough (you can always cut it down).
- Hardwood Runner: You'll need a piece of hardwood that fits snugly into your table saw's miter slot. Oak, maple, or even a dense plywood will work well. You can buy this pre-made, or rip your own on the table saw.
- T-Track (Optional, but highly recommended): T-track allows you to easily adjust the fence position and secure it in place. It's a fantastic addition for versatility.
- Knobs or Clamps: To secure the fence to the base. Wing nuts, star knobs, or even small clamps will do the trick.
- Hinges: Small hinges to connect the fence to the base. 2 should be enough.
- Screws: Wood screws in various lengths to assemble the jig. Be sure to use screws that are appropriate for the thickness of your material.
- Glue: Wood glue to reinforce the joints.
Tools:
- Table Saw: Obviously!
- Miter Saw (Optional): Makes cutting parts to length easier, but not essential.
- Drill and Drill Bits: For drilling pilot holes and installing screws.
- Screwdriver: To drive in the screws (duh!).
- Measuring Tape: For accurate measurements. No squinting and guessing allowed!
- Square: To ensure everything is square and true. An essential tool for any woodworking project.
- Clamps: To hold pieces together while the glue dries. You can never have too many clamps!
- Safety Glasses: Protect those peepers! Seriously, don't skip this step.
- Hearing Protection: Table saws are loud! Protect your ears.
Step-by-Step Instructions
Okay, now for the fun part: building the jig! Follow these steps carefully, and you'll have a functional tapering jig in no time. Remember to take your time and double-check your measurements. A little extra care now will save you headaches later.

Step 1: Cut the Base
Start by cutting the base of your jig from the plywood or MDF. I recommend a size of around 12 inches wide by 30 inches long, but you can adjust this to suit your needs. Make sure the edges are straight and square. A wobbly base will lead to wobbly cuts, and nobody wants that!
Step 2: Attach the Miter Slot Runner
This is a critical step. The hardwood runner needs to fit snugly (but not too tightly!) into your table saw's miter slot. Test the fit frequently as you adjust the runner's dimensions. It should slide smoothly without any binding. Use wood glue and screws to attach the runner to the underside of the base, ensuring it's perfectly aligned with the edge. Any misalignment here will translate into inaccurate cuts later on.
Pro Tip: If your miter slot is slightly wider than standard, you can use shims or tape to get a perfect fit.

Step 3: Install the T-Track (Optional)
If you're using T-track (and I highly recommend it), now's the time to install it. Rout a shallow groove along the length of the base, parallel to the miter slot runner. The groove should be just deep enough to accommodate the T-track. Secure the T-track with screws, countersinking them so they don't interfere with the sliding fence. T-track adds so much versatility. You'll thank me later!
Step 4: Build the Fence
Cut a piece of plywood or MDF for the fence. This should be slightly longer than the width of your base. The height of the fence is up to you, but around 4-6 inches is a good starting point. Make sure the edges are straight and square. This is the piece that will guide your workpiece, so accuracy is key!
Step 5: Attach the Hinges
Attach the hinges to the bottom of the fence, near the back edge. Then, attach the other side of the hinges to the base. Make sure the fence can pivot smoothly. This is where the magic happens! The hinges allow you to adjust the angle of the fence, creating the taper. You could use one long hinge, but two smaller ones are usually easier to find and install.
Step 6: Add the Locking Mechanism
This is where you secure the fence at the desired angle. There are several ways to do this:

- T-Track and Knob: If you installed T-track, simply drill a hole through the fence and use a bolt, washer, and knob to clamp the fence to the base. This is the most versatile and adjustable option.
- Wing Nuts and Bolts: Drill a series of holes through the fence and the base. Use bolts, washers, and wing nuts to secure the fence at different angles. This is a simpler, but less precise, option.
- Clamps: You can also use small clamps to secure the fence to the base. This is the easiest option, but it can be a bit fiddly.
Choose the method that works best for you and your budget.
Step 7: Fine-Tune and Test
Once the jig is assembled, it's time to fine-tune and test it. Use a square to ensure the fence is perpendicular to the blade when the jig is set to zero degrees. Then, use a protractor or angle gauge to set the fence to different angles and test the accuracy. Make any necessary adjustments until you're happy with the results.
Safety First! Always use push sticks and feather boards when using your tapering jig to keep your hands safe.

Using Your Tapering Jig
Now that you have your very own, custom-built tapering jig, let's talk about how to use it. It's actually quite simple:
- Set the Angle: Loosen the locking mechanism and pivot the fence to the desired angle. Use a protractor or angle gauge to ensure accuracy.
- Secure the Workpiece: Place the workpiece against the fence and secure it with clamps or hold-downs. Make sure the workpiece is firmly against the fence.
- Make the Cut: Slowly and carefully push the jig through the table saw blade, keeping the miter slot runner engaged in the miter slot. Use a push stick to guide the workpiece and keep your hands safe.
- Repeat: Repeat the process for each side of the workpiece, adjusting the angle as needed.
Important Considerations:
- Wood grain direction: Pay attention to the direction of the wood grain and how it interacts with the blade. Avoid cutting against the grain, as this can cause tear-out.
- Feed rate: Don't force the jig through the blade. Let the blade do the work. A slow, steady feed rate will produce the best results.
- Blade height: Adjust the blade height so that it's just high enough to cut through the workpiece.
Tips and Tricks
Here are a few extra tips and tricks to help you get the most out of your tapering jig:
- Add a Measuring Scale: Attach a measuring tape or ruler to the base of the jig to easily set the angle of the fence. This eliminates the need for a protractor or angle gauge.
- Use Hold-Down Clamps: Hold-down clamps can be used to securely hold the workpiece against the fence, preventing it from shifting during the cut. This is especially helpful when working with small or oddly shaped pieces.
- Practice Makes Perfect: Don't be afraid to experiment with different angles and settings. The more you use your tapering jig, the better you'll become at using it.
- Store it Properly: When you're not using your tapering jig, store it in a safe place where it won't get damaged.
Conclusion
So there you have it! A complete guide to building and using your own tapering jig. With a little effort and some basic woodworking skills, you can create a versatile and accurate tool that will help you tackle all sorts of tapering projects. Now go forth and create some beautiful, angled masterpieces! And remember, if I can do it (after my initial "architecturally unsound" attempt), so can you. Happy woodworking!
