In most cases, a router equipped with a 5/32-in. slot bit can cut perfect slots to fit the biscuits. Mark the biscuit positions on both adjoining boards as you would with a biscuit joiner. Then cut a ...

For slot cutters or pattern bits, visit a supplier that caters to woodworkers. Many bits are available with 1/4-in. or 1/2-in. shanks. If your wood router takes both, go with the beefier 1/2-in.