How To Making Cove Molding On A Table Saw The Best Proven Way

To make cove molding on a table saw, you will clamp a straight board (a jig) diagonally across the blade. Then, you make a series of very shallow cuts, raising the blade slightly after each pass. This gradual process safely carves a smooth, curved cove into your wood.

Have you ever looked at a piece of furniture and admired its elegant, curved molding? That beautiful detail is often a cove, and it looks like something you’d need a special, expensive tool to make. Many woodworkers think making custom coves is out of their reach. They either buy standard molding from a big box store or avoid the design altogether. But what if I told you that you can create your own custom cove molding with the most versatile tool in your shop: the table saw? It’s true! Forget the idea that this is a complicated or dangerous task. I’m here to show you a safe, proven, and surprisingly simple method to do it yourself. Get ready to unlock a new level of creativity in your projects.

What Exactly is Cove Molding?

Before we start making sawdust, let’s quickly talk about what we’re creating. Cove molding is simply a piece of wood with a concave profile, like an inward curve. Think of it as the inside of a spoon. It’s used everywhere in woodworking and home improvement:

• As crown molding where walls meet the ceiling.
• Underneath shelves for a decorative touch.
• As a transition piece in custom furniture and cabinetry.
• To frame boxes or mirror frames.

The ability to make your own means you are no longer limited by what the store has in stock. You can choose the exact wood, width, and depth you need for a truly custom look.

Why Make Your Own Cove Molding?

You might be thinking, “Can’t I just buy this stuff?” Of course, you can. But making it yourself opens up a world of possibilities and has some serious advantages:

• Total Customization: You control the size, depth, and shape of the curve. You can create a wide, shallow cove or a narrow, deep one—whatever your project demands.
• Perfect Wood Matching: Are you building a project out of cherry, walnut, or some other beautiful hardwood? Now your molding can match perfectly because you’re making it from the same lumber.
• Cost Savings: Custom hardwood moldings can be very expensive. Making them yourself from leftover project boards or standard lumber can save you a significant amount of money.
• Skill Building: This technique is a huge confidence booster. Once you master it, you’ll start seeing opportunities to add beautiful curves to all sorts of projects.

Safety First: The Golden Rule of Cove Cutting

Let’s address the most important topic right away: safety. The idea of running a piece of wood over a spinning blade at an angle might sound intimidating. It’s a non-traditional use of the table saw, so we need to be extra careful. But “non-traditional” does not mean “unsafe.” When done correctly, this method is very controlled and predictable.

The U.S. Consumer Product Safety Commission (CPSC) reports that table saws are involved in thousands of injuries each year. Nearly all of these incidents are preventable. By following these rules, you ensure a safe and successful outcome.

Your Cove Cutting Safety Checklist:

• Always Use a Jig: Never try to cut a cove freehand. A securely clamped jig or auxiliary fence is absolutely required. It guides the wood and keeps your hands far from the blade.
• Make Shallow Passes: This is the key to both safety and a quality cut. We will only remove a tiny bit of material with each pass. Never try to hog out the whole cove at once.
• Use Push Sticks: Your hands should never get close to the blade. A good pair of push sticks will control the workpiece safely.
• Wear Your PPE: Safety glasses are non-negotiable. Hearing protection and a dust mask are also highly recommended.
• No Distractions: Give the task your full attention. Turn off your phone and make sure pets or children are not in the workshop.
• Disconnect Power During Setup: Unplug the saw whenever you are making adjustments to the blade or the jig.

By respecting the tool and the process, you can make beautiful cove moldings without any drama. Now, let’s get our gear together.

Tools and Materials You’ll Need

The good news is you don’t need any exotic tools for this job. You probably have everything you need in your shop right now.

Tools List:

• Table Saw: Any standard cabinet or contractor saw will work.
• Standard Table Saw Blade: A 10-inch, 40-tooth ATB (Alternate Top Bevel) or combination blade is perfect. Do NOT use a thin kerf blade, as it can flex. You also do not need a dado stack.
• A Sturdy Jig: This is just a straight, flat piece of wood. A 2×4 or a piece of ¾-inch plywood about 3-4 feet long works great.
• Clamps: At least two sturdy C-clamps or F-style clamps to hold the jig securely to your saw’s table.
• Push Sticks: You’ll want at least one, but two is even better for maximum control.
• Measuring Tape & Pencil: For marking your jig and workpiece.
• Safety Gear: Safety glasses, hearing protection, and a dust mask.

Materials List:

• Wood for Your Molding: Choose a wood that is free of knots and has a straight grain. Poplar is a great, affordable choice for painting. Oak, maple, or cherry are excellent for staining.
• Scrap Wood: You will need a piece of the same type and thickness of wood for test cuts. This is crucial for dialing in the perfect settings.

Step-by-Step: How to Make Perfect Coves on Your Table Saw

This is where the magic happens. We’ll break this down into simple, manageable steps. Remember to work slowly and deliberately. The whole process is about making small, repeatable adjustments.

Step 1: Build and Position Your Cove Cutting Jig

Your “jig” is nothing more than a temporary fence clamped to your table saw. Its job is to guide your workpiece over the blade at a specific angle.

• Prepare Your Jig: Grab your straight piece of wood (like a 2×4). Make sure one edge is perfectly straight and smooth. This edge will guide your molding stock.
• Disconnect Power: Unplug your table saw.
• Set the Angle: This is the most important part of the setup. The angle of your jig relative to the blade determines the shape of your cove. Place the jig on your saw’s table so it crosses over the blade.

A steep angle (closer to 90 degrees to the blade) will produce a more elliptical, football-shaped cove.

A shallow angle (closer to 45 degrees) will produce a more circular, symmetrical cove.

• Secure the Jig: Once you have an angle you like, clamp both ends of the jig firmly to the cast iron top of your table saw. Make sure it is rock solid and cannot move at all. Wiggle it to be sure!
• Raise the Blade (Slightly): With the jig in place, raise the blade just enough so you can see where it intersects the jig. Use a pencil to mark the entry and exit points of the blade on the top of your jig. This gives you a clear visual of the cutting zone.

Step 2: Start with a Low Blade Height

This is the most important safety and quality step. We will build the cove in many small bites.

1. Lower the Blade: Lower the saw blade completely below the table.
2. Plug In the Saw: Reconnect the power to your saw.
3. Set Initial Height: Turn the saw on and carefully raise the blade until it is just barely protruding from the table—no more than 1/16 of an inch. A tiny scratch is all you need for the first pass.

Starting low prevents the blade from grabbing the wood and reduces the force required to push the workpiece. It’s the secret to a clean, burn-free cut.

Step 3: Make Your First Test Cut

Always, always use a scrap piece of wood first. Never use your final workpiece for setup.

• Grab Your Test Board: It should be the same thickness and species as your final molding pieces.
• Position the Wood: Place the test board flat on the table saw and hold it firmly against your clamped jig.
• Use Push Sticks: Position your push sticks so you can apply pressure both down onto the table and sideways into the jig.
• Make the Pass: Turn on the saw. Using a slow and steady motion, feed the test board over the blade. Keep the feed rate consistent from start to finish. Don’t stop in the middle of the cut.
• Inspect the Cut: Turn off the saw and look at your first pass. It will be a very shallow curve. This is perfect! You have now established the path for all future cuts.

Step 4: Raise the Blade and Repeat

Now we just repeat the process, slowly making the cove deeper with each pass.

• Turn Off the Saw: Never adjust the blade height while it is spinning.
• Raise the Blade Slightly: Give the height adjustment wheel a small turn—about a quarter-turn, which usually raises the blade another 1/16 of an inch.
• Make Another Pass: Turn the saw back on and run your test piece through again, following the exact same path. The cove will get slightly deeper and wider.
• Continue the Process: Keep repeating this sequence: turn off saw, raise blade slightly, make a pass. Do this until you reach the desired depth for your cove. It might take 10, 15, or even 20 passes. Patience is key to a beautiful result.

Once you are happy with the cove on your test piece, you are ready to run your final project boards through using the exact same process.

Step 5: Sanding and Finishing

The cutting process will leave very fine ridges inside the cove. These need to be smoothed out for a professional finish.

• Scraping: A curved card scraper that matches the profile can quickly remove the machine marks.
• Hand Sanding: The most common method is to wrap a piece of sandpaper around a dowel or other round object that fits the curve of your cove. Start with a medium grit (like 120) and work your way up to a fine grit (like 220).
• Power Sanding: An oscillating spindle sander or a drill with a flap wheel sanding attachment can also work well, especially for large batches of molding.

After sanding, your custom molding is ready for paint, stain, or clear finish to match your project.

Understanding Cove Geometry: Angle and Blade Height

How do you know what angle to set your jig to, or how high to raise your blade? The relationship between the jig angle, blade height, and the resulting cove dimensions can feel a bit like trigonometry class. But don’t worry, we can simplify it.

The width of the cove is determined by the angle of your jig. The depth of the cove is determined by the maximum blade height. Here is a simple table to give you a starting point. These numbers are approximate for a standard 10-inch blade.

The best way to get the exact cove you want is to experiment on scrap wood. Set your jig at an angle, make a full cove, and measure it. If it’s too narrow, make the angle shallower (closer to 45 degrees). If it’s too wide, make the angle steeper (closer to 90 degrees). For more precise calculations, you can find online cove cutting calculators, like this handy one provided by the Woodworkers Guild of America.

Tips for Flawless Results and Common Mistakes to Avoid

Getting a good result is easy if you avoid a few common pitfalls.

Do This for a Perfect Cove:

• Use a Sharp Blade: A sharp combination blade will leave a cleaner surface with less burning.
• Maintain Consistent Speed: A steady feed rate is the number one way to prevent ugly burn marks in the wood.
• Use Featherboards: For extra safety and control, you can clamp a featherboard to the table to help hold the stock firmly against your jig.
• Choose the Right Wood: Hardwoods with a tight, straight grain like maple, cherry, and poplar work beautifully. Softwoods like pine can sometimes tear out or get fuzzy.

Avoid These Common Mistakes:

• Cutting Too Deeply: Taking too big of a “bite” is the most dangerous mistake. It can cause the wood to be thrown by the blade, a dangerous situation known as kickback. Stick to 1/16″ increments.
• Using a Flimsy Jig: If your jig moves even slightly during the cut, your cove will be inconsistent. Make sure it’s clamped down tightly.
• Stopping Mid-Cut: Pausing while the wood is over the blade will almost always leave a burn mark that is difficult to sand out. Commit to each pass.
• Using Warped Wood: If your workpiece is not perfectly flat, it won’t make consistent contact with the table and jig, resulting in an uneven cove. Make sure your boards are properly milled flat before you begin.

Choosing the Best Wood for Your Cove Molding

The type of wood you choose can impact the cutting process and the final look. Some woods are much easier to work with than others for this technique.

For more in-depth information on the properties of different woods, the Wood Database is an excellent resource for any woodworker.

Frequently Asked Questions (FAQ)

Can I use a dado stack to cut a cove?

No, you should not use a dado stack for this. The shape of the teeth on a dado set is flat, which will create a rough, stepped surface, not a smooth curve. A standard blade cuts with the top arc, which is what creates the clean cove shape.

What is the best table saw blade for making coves?

A standard 10-inch combination blade with 40 or 50 teeth is perfect. It provides a good balance between a smooth cut and efficient material removal. Avoid thin kerf blades which can flex, and avoid specialty ripping blades which have too few teeth.

How do I stop the wood from burning?

Burning is caused by heat from friction. To prevent it, ensure your blade is sharp and clean, use a consistent and steady feed rate (not too slow), and only raise the blade a tiny amount for each pass. Taking shallow cuts is the best prevention.

Can I make a cove wider than my blade is tall?

No. The maximum depth of your cove is limited by the radius of your saw blade. For a 10-inch blade, the maximum radius is 5 inches, but you can only raise the blade about 3 to 3.5 inches, so that is your practical depth limit. The width is determined by the angle of your jig.

Is this technique safe to use on plywood?

It is not recommended. The layers of veneer in plywood will tear out badly, creating a very rough and splintery cove that is nearly impossible to clean up. This technique works best with solid wood.

What’s the easiest way to sand the inside of the cove?

Wrap a piece of sandpaper around a wooden dowel, a piece of PVC pipe, or even a rolled-up magazine that roughly matches the curve of your cove. This creates a custom sanding block that will smooth the surface evenly.

My cove isn’t symmetrical. What did I do wrong?

An asymmetrical cove is usually caused by the workpiece not being held flat against the table or tight against the jig fence. Make sure your wood is flat and use firm, consistent pressure against the fence throughout the entire cut.

Conclusion: You’ve Got This!

Making your own cove molding on the table saw is one of those classic woodworking techniques that looks far more complicated than it actually is. By breaking it down into a safe, step-by-step process, you can transform a basic tool into a creative powerhouse. Remember the keys to success: use a solid, well-clamped jig, make many shallow passes, and always use a test piece to dial in your settings first.

The first time you install a piece of custom molding that you made yourself—in the perfect wood and with the perfect dimensions for your project—is a truly rewarding moment. It elevates your work from standard to special. So grab some scrap wood, head out to the shop, and give it a try. You’ll be amazed at what you can create.