How to Set Table Saw Rip Fence Parallelism at Both Ends
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A table saw rip fence should run parallel to the blade, or be very slightly farther away at the rear. If the fence points toward the blade at the back, the work can bind between the fence and blade, increasing the chance of burns, kickback, and a damaged cut. If it opens too far at the rear, the saw is generally safer, but the cut may wander and the workpiece can lose consistent support.
The practical target is parallel within about 0.005 inch over the fence’s working length. A rear opening of 0.002 to 0.005 inch is acceptable on many saws, provided the fence locks firmly and does not move when you apply normal hand pressure. The exact specification in your saw’s manual takes priority.
Contents
What you need before adjusting
Start with a clean saw. Remove pitch and sawdust from the table, fence faces, front rail, and locking mechanism. A small amount of debris under the fence can change the reading by several thousandths of an inch.
You will need a reliable steel rule or tape measure, a combination square, and a pencil. For more accurate work, use feeler gauges or a dial indicator. A dial indicator mounted in a miter-slot bar is the most repeatable option, but it is not essential for a typical contractor or cabinet saw.
Unplug the saw before making any adjustment. Raise the blade fully, then lower it slightly if you need more room to work. The blade should be installed correctly and free of visible damage. You are checking the fence in relation to the blade, so a bent blade or poorly seated arbor flange can mislead you.
Check the blade and miter slot first
Do not begin by adjusting the fence if the blade is not parallel to the miter slot. The miter slot is the fixed reference on most table saws. If the blade is skewed in the cabinet, you may make the fence appear correct while cuts remain inaccurate.
Choose one tooth near the front of the blade and mark it with a pencil. Rotate that tooth to the front, just above the table, and measure from the tooth to the edge of the miter slot. Slide the tooth to the rear and measure again. Use the same tooth because blade plates and teeth can vary slightly.
The front and rear measurements should be within roughly 0.003 to 0.005 inch for general woodworking. If they are not, align the blade or trunnion assembly according to the saw manual before setting the fence. On some saws, this requires loosening the table or trunnion bolts and shifting the assembly. Do not use the fence to compensate for a misaligned blade.
Measure the fence at both ends
Lock the fence in a convenient position, preferably with its face several inches from the blade. Measure at the front and rear using the same reference points. Measure from the blade tooth to the fence face, not to the fence rail. Keep the rule or gauge square to the fence and avoid touching the spinning blade.
For a quick check, place a combination square or steel rule against the side of the blade plate, then compare the gap to the fence. Do not measure against the carbide tooth itself; its protrusion can vary. A feeler gauge lets you quantify the gap without relying on eyesight.
| Rear-to-front relationship | What it usually means | What to do |
|---|---|---|
| Rear is 0.002–0.005 inch farther from the blade | Safe, slightly open alignment | Usually leave it alone if cuts are clean |
| Front and rear are within 0.005 inch | Parallel enough for most work | Lock the fence and verify it repeats |
| Rear is closer to the blade | Potential binding and kickback condition | Adjust immediately; do not keep cutting |
| Difference changes each time | Fence lock, rail, dirt, or fence body problem | Clean and inspect before fine adjustment |
Adjust the fence parallelism
Fence designs vary, but the adjustment usually involves screws, bolts, or eccentric cams at the fence head. Release the locking handle and locate the hardware that controls the fence head’s relationship to the rail. Do not loosen every bolt at once. Keep enough tension that the fence remains supported and can be nudged.
Make small adjustments. If the rear is too close to the blade, move the rear away by a small amount, then retighten the hardware just enough to hold it. Recheck both ends after every change. A movement of 1/32 inch at the adjustment point can produce a much larger change at the fence’s rear tip, depending on the mechanism.
Some fences pivot around the front head. On these, a small change at the rear may be normal and easier to control than trying to move both ends independently. Other fences have separate front and rear adjustment points. Set the front first so it remains at the desired distance from the blade, then adjust the rear to match or open slightly.
After tightening, unlock and relock the fence several times. Many fences shift slightly as the locking handle clamps. If the measurement changes by more than about 0.003 inch, the lock needs adjustment or the rail and fence need cleaning.
Verify the final setting
Push the locked fence sideways and toward the blade with firm hand pressure. It should not visibly deflect. Check the measurement at both ends again with the fence locked. Then move the fence to several positions and repeat the test. A fence can be parallel near the blade but point inward or outward farther down the rail if the rail is twisted.
For a dial-indicator check, place the indicator in the miter slot and sweep the fence face from front to rear. Zero the indicator at the front, then read the change at the rear. A reading of +0.002 inch means the rear is farther from the indicator reference; interpret the sign based on your setup. A table saw dial indicator gauge makes this easier, especially when setting up a saw for thin strips or cabinet work.
Common problems that mimic poor alignment
If the fence is parallel at one position but not another, inspect the front and rear rails for looseness. A rail that sags or twists changes the fence angle as it travels. Check the fence face with a straightedge; a bowed face cannot be corrected with parallelism adjustments.
If the fence springs away from the table or rocks, inspect the glide pads, rollers, and locking mechanism. Worn parts may be available as a table saw rip fence replacement part, but replacing a worn component is preferable to forcing the adjustment. A basic aftermarket fence may be adequate for a small saw, while a heavier precision fence is worth considering if you routinely cut sheet goods or need repeatable narrow strips.
Finally, make a test cut in scrap. Check the width at both ends, look for burn marks, and confirm that the workpiece does not pinch behind the blade. Use the riving knife whenever possible. Proper fence alignment reduces risk, but it does not replace a riving knife, push stick, blade guard, or safe feeding technique.
