Spiral router bits are used for a variety of woodworking applications, including plunge cutting, shaping, and slotting. They are designed with a spiral cutting edge that can create smoother cuts and reduce tear-out. Here are some common types of spiral router bits:
Upcut Spiral Router Bit: The upcut spiral router bit pulls chips up and away from the workpiece, making it ideal for cutting materials like wood and plastics. It is commonly used for plunge cutting and shaping.
Downcut Spiral Router Bit: The downcut spiral router bit pushes chips downward and is best for cutting materials that are prone to tear-out, such as plywood and veneer. It is commonly used for cutting slots and creating a clean edge on the top of the material being cut.
Compression Spiral Router Bit: The compression spiral router bit has a combination of upcut and downcut flutes, allowing it to produce a clean edge on both the top and bottom of the material being cut. It is commonly used for cutting materials like laminates, MDF, and solid surface materials.
Mortising Spiral Router Bit: The mortising spiral router bit has a long, straight cutting edge that is designed for creating deep mortises. It is commonly used for making mortise and tenon joints and other joinery work.
Cove Spiral Router Bit: (Very Rare) The cove spiral router bit has a concave cutting edge that is used for creating coves, which are shallow grooves with a rounded bottom. It is commonly used for decorative edging and molding work.
Round Nose Spiral Router Bit: The round nose spiral router bit has a rounded cutting edge that is used for creating smooth curves and contours. It is commonly used for carving and other decorative work.
When selecting a spiral router bit, consider the material you will be cutting, the desired cut quality, and the type of cut you need to make. By selecting the right bit for the job, you can achieve the best results and ensure a professional-looking finish.
