Wood Router Bits
Choose a straight bit or spiral for a groove
Match the groove width to the stock and pick flute geometry suited to the material and visible face.
Measure the piece that will enter the groove
A panel’s nominal size and measured thickness can differ. Check the exact piece where it will sit, then select a cutter width and test the fit in scrap from the same stock.
Compare flute directions
An upcut spiral directs chips toward the router. A downcut directs them away. Where the stock has a delicate visible face, use the manufacturer’s guidance and inspect the corresponding edge on a sample.
Read the cut length as a dimension
The cutting section describes how much of the tool can engage material. It does not prescribe pass depth. Consult the documentation for the particular cutter and machine before choosing a setup.