The most common sizes of rabbet bits are 1¼ inches and 1⅜ inches, and most bits come with several interchangeable bearings ranging from ⅜-inch to 1⅛ inches.īest For: Creating rabbet joints to join two pieces of material.Įditors’ Choice: The rabbeting set by YAKAMOZ (available on Amazon) offers a high-quality bit specifically designed to resist kickback and heat, along with six different sized bearings to produce any size rabbet you may need. As a result, the width of the cut is determined by the size of the bearing, with a smaller bearing producing a wider cut. What distinguishes these bits from others (like a straight bit used for rabbeting) is the addition of a circular pilot bearing at the bit’s tip that acts like a spinning wheel riding along the edge of the piece being cut, guiding the cutting arm to the perfect depth. This occurs in cabinetry construction to make drawers and cabinet backs as well as to join the tops of cabinets to cabinet sides. Rabbeting bits are designed to form an L-shaped shoulder or dado (square groove that runs against the grain) on the edge of a piece of material to form a rabbet joint. They’re available in cut diameters ranging from 3/16-inch to 1½ inches and have either one or two ‘flutes’ (cutting arms) depending on how large or fine of a cut you need.īest For: Making grooves, dados, mortises, and decorative inlays.Įditors’ Choice: The Italian-made Freud straight bit (available on Amazon) is made with a precision-cut hook and shear angle that ensures straight, smooth cuts. They can even be used in place of more specialized bits (like rabetting, described below), which contributes to their impressive versatility. Aside from joinery, straight bits can also be used for mortising in door hardware, or for grooving a channel where a decorative inlay can be inserted. For example, the mortise and tenon joint is a very popular and sturdy joining technique that can be easily made with a straight bit. All of these cuts are often used for joining two pieces of material. These grooves can be cut with the wood grain (the technical definition of a “groove”), against the wood grain (called a “dado”), or along the edge of wood to produce an L-shaped shoulder or “rabbet”. While in a class of their own, straight bits are usually used for cutting different types of square-shaped grooves. There are also bits for drilling holes into concrete, plastic, metal, wood, and other materials.Straight bits are perhaps the most frequently used type of router bit since they can be used in a wide variety of applications. You can drill soft materials with any bit, but for hard or brittle materials like acrylic or glass, you might need specially designed bits. You can drill just about anything - it all depends on picking the right bit size. Also, drills with half an inch chuck will work with larger bits that are half-inch in diameter.Ĭhoosing the right size of the drill bit will mean that you will be able to get the hole drilled with the least amount of trouble and without causing any damage to the material, yourself, or the tools. Drills with a ⅜-inch chuck will accept bits that are ⅜-inches in diameter. The first and foremost thing is to ensure that the size of the drill bits shank matches your drill size. Why Does the Size of My Drill Bit Matter?ĭifferent drill bit sizes are suitable for different purposes. The drill bit will then spin clockwise to create a hole. To use them, insert the upper end, also known as the shank, into the chuck in the drill. They are attached to the drill, which, when switched on, rotates to power through the workpiece, creating holes of circular cross-section. Drill bits come in various sizes and shapes. A drill bit is a cutting tool used with the drill to create holes in almost any material.
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