What Is a Zero Clearance Insert and Which One Fits?

On this page (8 sections)

1. What does a zero clearance insert do?
2. Which insert fits your table saw?
3. When is a zero clearance insert useful?
4. Can you use one for bevel cuts or dado blades?
5. Which zero clearance insert options suit these saws?
6. How do you install and set up a zero clearance insert?
7. What should you check before buying?
8. Which zero clearance insert should you choose?

A zero clearance insert for a table saw supports wood close to the blade, which can help reduce chip-out and keep thin offcuts from dropping into the opening. Choose an insert made for your exact saw model, then check blade and bevel clearance before cutting.

A standard throat plate leaves space around the blade so it can move through the table. A zero clearance insert narrows that opening to about the blade's kerf, but the right fit depends on the saw, blade, and cut.

What does a zero clearance insert do?

A zero clearance insert supports the workpiece closer to the blade than a plate with a wider opening. That close support can help reduce splintering along the cut edge, especially when cutting plywood or other material that chips easily.

It can also help keep thin offcuts from falling into the gap around the blade. The insert doesn't replace a riving knife or blade guard, and it doesn't make a cut safe by itself.

How does a zero clearance insert for a table saw work?

A zero clearance insert works by creating a narrow slot where the blade passes through the plate. Some inserts arrive with a slot; a blank insert may need to be cut to match the blade position.

A custom slot suits one blade height and angle. Before raising a blade through an insert, follow the instructions for both the saw and the insert, and confirm the plate is secured and flush.

Which insert fits your table saw?

Match the insert to the exact saw model and plate dimensions. Check the model number, length, width, thickness, locating tabs, and any locking or safety-pin features.

The name of a saw brand alone isn't enough to confirm fit. Two models from the same maker can use different throat plates, and a similar-looking insert can sit unevenly or fail to lock.

Measure your current plate before ordering. If the replacement needs trimming or sanding, make sure the insert's design allows it and follow its instructions.

When is a zero clearance insert useful?

A zero clearance insert is useful when you want more support beside the blade or want to reduce the opening for narrow offcuts. It can be a practical add-on for plywood cuts, thin stock, or a setup that uses a dedicated blade.

Each insert's slot is limited to its blade position and angle. A plate cut for a 90-degree blade may not clear the blade when tilted, so check the opening before making a bevel cut.

For blade selection, see what size blade your table saw takes. The insert has to suit the blade and the saw's movement range.

Can you use one for bevel cuts or dado blades?

Use a zero clearance insert for bevels or dadoes only when it provides the needed clearance. A narrow slot can contact a tilted blade or a wider dado stack.

Some inserts have a precut pocket or a slot intended for a specific setup. The Leecraft DL-1U includes a precut blade pocket for fully retracted blades and bevel cuts, and its product information says to use carbide-tipped blades only.

The AGILLE four-pack names several DeWalt saw models and says it can be used with standard single blades or dado blades. It can be cut and sanded to fit, so check the saw's requirements before modifying it.

If you use a dado set, read how to choose an 8-inch dado set and confirm the insert is suitable for the width and height of your stack. Never force a blade through a plate that doesn't provide clearance.

Which zero clearance insert options suit these saws?

Choose by model compatibility first, then by the features you need. These options cover the SKIL TS6307-00, several DeWalt models, and selected Delta and other saws.

SKIL STZ6307 Zero Clearance Insert

The SKIL STZ6307 is designed specifically for the SKIL TS6307-00. It has a quick-release button and included hardware to adjust the plate flush with the table.

STZ6307 Zero Clearance Insert for SKIL

This GEAIN insert is also designed for the SKIL TS6307-00. Its features include a quick-release button, adjustable height, and a gap reduced to the thickness of the blade.

Compare the exact model fit and included adjustment features before choosing between these two. If you have a different SKIL saw, confirm compatibility rather than relying on the STZ6307 name alone.

Zero Clearance Inserts for DeWalt 7491

This four-pack names the DeWalt 7491, 7491RS, 7490 Type 1, 744, 745, 746, and 7480. It has a riving knife slot and includes offset screws.

The insert is not for DeWalt 7485 models. It measures 13.5 inches long, slightly longer than the insert for the DW7485.

Leecraft DL-1U Insert for Delta Saws

The Leecraft DL-1U names Delta Unisaw, left-tilt Unisaw, 10-inch contractor and tilt-arbor saws, plus several Grizzly, Jet, Powermatic, Craftsman, Bridgewood, and Steel City models. It includes leveling and side and end adjustment screws, plus a rear safety pin.

It measures 13-3/8 x 3-3/4 x 1/2 inches. Measure your existing insert and confirm that your saw model is named before ordering.

How do you install and set up a zero clearance insert?

Follow the instructions for your saw and insert, and make sure the plate sits flush and locks securely. If the insert needs a blade slot cut into it, use only the procedure specified for that insert and saw.

Before starting, unplug the saw and remove the old plate. Check that the new insert sits level with the table and cannot lift or shift; adjust its screws if the design provides them.

If you're cutting a slot into a blank, keep hands clear and use the prescribed setup. Don't use an insert with a loose fit, visible damage, or a slot that doesn't clear the blade throughout its intended movement.

After installation, verify that the riving knife and guard work as intended. Our guide to riving knives and splitters explains what each part does, and table saw safety features covers the guard, riving knife, and brake.

What should you check before buying?

Confirm fit, blade clearance, and the cuts you plan to make. Those checks help avoid an insert that sits poorly or blocks a blade position you use.

• Match the insert to your saw's exact model.
• Measure the old plate and compare its shape and dimensions.
• Check whether the insert is pre-cut or needs a slot made.
• Confirm clearance for bevel cuts, blade height, and any dado setup.
• Check that the plate can sit flush and stay secured.
• Keep the riving knife and guard requirements in view.

A zero clearance plate is a setup-specific accessory. If you change blade type or use a different bevel angle, confirm that the opening still provides clearance before turning on the saw.

For broader setup decisions, see choosing and setting up a table saw. If your blade and fence aren't aligned, use our table saw alignment guide.

Which zero clearance insert should you choose?

Choose the SKIL STZ6307 or the GEAIN STZ6307 if you have the SKIL TS6307-00 and want a model-specific insert. Choose the DeWalt four-pack only if your model is among those named, and avoid it for the 7485.

Consider the Leecraft DL-1U if your saw appears in its fit list and its dimensions match your existing plate. Measure first, then verify blade and bevel clearance so the insert suits the cuts you plan to make.

For related table saw add-ons, compare miter gauges for table saws and featherboards for table saws.

Frequently asked questions

What does a zero clearance insert do on a table saw?

A zero clearance insert supports wood close to the blade and reduces the opening around it to the blade's kerf. That can help limit chip-out on the cut edge and keep narrow offcuts from dropping into the opening.

The insert must fit your saw and allow safe blade movement.

Does a zero clearance insert fit every table saw?

No. Insert length, width, thickness, locking features, and safety-pin locations vary by saw.

Match the insert to your exact table saw model, then measure the existing plate and confirm the fit information for the insert.

A similar-looking insert may not sit flush or lock in place.

Can you use a zero clearance insert with a dado blade?

Only if the insert is designed for the dado setup and has enough opening width and depth. A standard zero clearance slot is cut for a specific blade position, so a wider dado stack may bind or hit the plate.

Check your saw and insert instructions before changing blades.

Do you need to cut a zero clearance insert before using it?

Some blank or uncut inserts need a slot made for your blade. Follow the insert and saw instructions for the blade height, fence position, and cutting method, and keep the guard and riving knife requirements in view.

Don't assume a pre-cut insert matches your blade or bevel angle.