Making Shiplap Siding Router Bits

It s a spendy bit and with a 1 2 shank you need a table to make this cut.

Making shiplap siding router bits.

Roll the board onto its back and repeat. L ay the board across sawhorses and run the router along one edge cutting the rabbet half the thickness or a little more of the stock. So for a 3 4 thick board that would mean setting the blade height to 3 8 as well as the rip fence to 3 8. You have to set both the height of your blade and the rip fence to make the 2 cuts necessary for shiplap.

I m afraid my router won t like to run the horizontal panel bit as the motor is only 2 1 4 hp bosch 1617evs. To make a more traditional shiplap joint simply cut one rabbet at 1 2 in. The shiplap is formed by cutting a rabbet into opposite faces of the top and bottom of each plank. I have not used a vertical panel bit 1 bit supposedly they need less hp because the diameter is not as large.

Good catch that the tablesaw cove jig will only remove the height of the carbide or less per pass. If you don t want this look you can just use a straight bit as shown below. The utility of the shiplap as a precision fitted joint. Usually a depth of half the thickness of the board is best.

B uy a shiplap router bit set here. A piloted rabbet bit and a router arc all you need to make them. That way when you install the boards you re left with a 1 4 in. Another option for making shiplap yourself is to use a shiplap router bit set.

When the rabbeted planks are matched up and fit together they form a flat water resistant.