Helpful Kerf Cutting Tips
The kerf printed on a blade or listed by the manufacturer is a good starting point, but the actual cut width can vary slightly with blade type, tooth geometry, wear, and saw setup. For the most accurate work, make a test cut in scrap material and measure the slot if the finished dimensions are critical.
Remember Which Side of the Line to Cut
Kerf removes material, so the position of the blade matters. When cutting a piece to a marked length, keep the blade on the waste side of the line rather than centering the blade directly on the mark. This helps preserve the intended finished dimension.
Allow for Squaring and Cleanup Cuts
Boards and other stock may need one or both ends trimmed before the final pieces are cut. Use the Additional Trim Cuts option when those cuts will remove material, especially when working from rough lumber or stock with damaged ends.
For repeated cuts, small kerf losses add up quickly. Measuring the actual blade kerf and including every planned cut can help prevent the last piece from ending up shorter than expected.