Router bits create grooves, profiles, and patterns in a variety of woodworking projects. Often used by woodworkers or general contractors, they come in a variety of styles to craft different edges and patterns. Common router bits include: Straight bits make a straight cut into a material and often see use where you need a square cut. They can see use cutting grooves, dado cuts, or rabbet cuts. They can also create mortise and tenon joints. Rabbeting bits create rabbet cuts and joints. They form an L-shaped shoulder or dado on the edge of the material to form the rabbet joint. Ogee bits create a decorative edge. Commonly, you can find Roman Ogee bits that create a decorative S-shape. Roundover bits function as a type of edging bit. They create a rounded profile on the edge of a material, giving the wood a smoother feel. It ‘rounds’ out the edge. You can find single and double roundover bits. Single options round out only one side of the edge while double roundover bits round out both the top and bottom. Chamfer bits create a beveled edge on the profile of the workpiece. Unlike a bevel cut, they do not extend across the profile, instead creating an angled edge.