Safe, Accurate Table Saw Crosscuts with a Magnetic Stop Block
Cutting several small pieces to exactly the same length can be a challenge at the table saw. A stop block makes repeatable cuts easy, but using the rip fence as a length stop during crosscutting can create a dangerous situation.
If the cutoff becomes trapped between the blade and rip fence, it can be thrown back toward the operator.
The solution is a simple magnetic stand-off block that attaches to the rip fence ahead of the blade.
The block provides a consistent reference for setting the length of each workpiece while leaving clearance between the cutoff and the fence during the cut.
It's a quick, inexpensive way to make small, repeatable crosscuts with greater control.
Make a Magnetic Table Saw Stop Block
The stop starts with a small piece of plywood.
A few rare-earth magnets are installed in counterbores on the bottom face of the block. The magnets hold the stop securely against a compatible steel table saw surface, allowing it to be positioned alongside the rip fence without permanent fasteners.
One useful detail is the curved edge of the block.
The arc creates a small contact area where the workpiece meets the stop. This helps establish a consistent reference point while reducing the tendency to bump the stop out of position.
The block should be thick enough to provide the necessary clearance between the rip fence and workpiece once the cut begins.
Set Up the Stop for Repeatable Crosscuts
Position the magnetic block against the rip fence well ahead of the saw blade, so the workpiece is no longer in contact with the stop before it reaches the blade.
Then adjust the rip fence to establish the desired cutting length.
With the saw off, place the workpiece against the stop and check the setup.
Use a miter gauge or crosscut sled to guide the workpiece through the cut. The magnetic block is only a length reference — it doesn't replace proper workpiece support.
Once the setup is correct, register each workpiece against the stop, then advance it with the miter gauge or sled.
By the time the workpiece reaches the blade, there should be clear space between it and the rip fence.
This prevents the cutoff from being pinched between the blade and fence.
Woodsmith Tip: Make a test cut and measure the finished piece before cutting a batch of identical parts. Also verify that the stop stays securely in position and cannot contact the blade.
A Simple Way to Improve Table Saw Accuracy
A reliable stop block saves time whenever you need several parts cut to the same length.
This magnetic version is especially convenient because it installs quickly, requires no permanent modifications, and can be removed when it's not needed.
The combination of a curved contact surface and recessed rare-earth magnets makes it a practical accessory for repeatable table saw crosscuts.
And most importantly, positioning the stop ahead of the blade provides the clearance needed to avoid trapping the cutoff against the rip fence.
It's a small shop-made accessory that can make a big difference when cutting small parts.
Build a Precision Table Saw Crosscut Sled
A magnetic stop block is handy for occasional cuts, but a dedicated crosscut sled offers even more support and control when cutting small parts, wide boards, and project components.
Explore our Precision Crosscut Sled woodworking plans to build a versatile table saw accessory designed for accurate, repeatable crosscuts.
GET THE CROSSCUT SLED PLANS → Make Accurate, Repeatable Crosscuts Even Easier
