DIY Miter Saw Fence Extension

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The standard raised fence on a manufactured miter saw allows you to stabilize short and moderate lengths of wood when making cuts. When cutting longer pieces, many do-it-yourself builders use an accessory stand or assistant to support the outer end of a piece. But this doesn’t ensure the piece is correctly aligned with the fence and saw blade at the point of contact. Whether you use a standard drop-down miter saw or a radial arm type, a simple fence extension ensures the accuracy of miter cuts made on longer pieces of finish lumber and trim.

Things You'll Need

  • MDF particle board, 3/4-inch by 3 1/2-inch
  • C-clamps, 3-inch
  • Set the miter saw on "zero degrees" as you do when making squared cuts. Measure and cut a piece of 3/4-inch by 3 1/2-inch MDF particle board 36 inches long. This is the fence extension.

  • Place the extension on its edge atop the miter saw table. Ensure it is against the face of the fence. Center the piece each way.

  • Secure the extension to the fence, near each end, using a 3-inch C-clamp. Ensure each clamp fits over the top edge of the extension, with the circular button far enough onto the face of the extension so the back of the clamp is against the back of the saw fence. Tighten the clamp handles at back of the fence.

Tips & Warnings

  • Use heavy-duty spring clamps instead of C-clamps to secure the extension to the fence.
  • Make a permanent extension by countersinking machine screws into the face of the MDF at holes that align with the machined holes you drill in the face of the miter saw fence. Secure the extension with washers and nuts on each screw at the back of the fence.

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References

  • Photo Credit Comstock/Comstock/Getty Images
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