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  • Writer's pictureJCS

How To Use A Router To Groove Hardwood Decking

For grooving your decking, we recommend using a standard router equipped with a 5/32" router bit, a standard biscuit joiner is also suitable for this purpose.


Guide the router either to the set limit or for a continuous groove, guide the router past the edge of the workpiece. It's recommended to use a wooden splinter guard to prevent the wood at the end of the workpiece from splitting during routing. Repeat the procedure until the groove has reached the correct depth.

It takes approximately 20 seconds per side to groove a ten-foot-long board. Maintain steady control over the board and your hand throughout the entire process, and wear protective eyewear to prevent injury.


How To Use A Router To Groove Hardwood Decking

Here are additional tips for how to properly groove your hardwood deck with a router!


Measure and Mark:

Before you begin routing, carefully measure and mark the locations where you want to create grooves on the hardwood decking boards. Use a pencil or chalk to make clear, visible markings.


Start Slowly:

When you're ready to begin routing, start the router and approach the decking board slowly and steadily. Avoid rushing the process, as this can lead to mistakes or uneven grooves. Maintain a consistent speed and pressure as you guide the router along the marked lines.


Use Guide Rails:

To ensure straight and even grooves, consider using guide rails or a straight edge to guide the router along the decking board. This helps maintain accuracy and prevents the router from veering off course.


Overlap Passes:

For wider grooves or deeper cuts, consider making multiple passes with the router, slightly overlapping each pass to achieve the desired width and depth of the groove.


Quality Check:

Once you've completed routing the grooves, inspect the boards for any irregularities or imperfections. Sand the grooves lightly if necessary to achieve a smooth finish.

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