![]() ![]() For example, if you plan to cut metal, ensure it is bi-metal for ceramic tiles to get a carbide edge. It’s vital to select the correct sort of hole saw for the material when you’re working with wood. They are suited for a number of things, such as drilling bigger holes or creating circular cuts. Hole saws are a regular sight in the construction industry. Some come with a built-in shank, which eliminates the need for a pilot bit. An arbour or mandrel with a shank is needed to attach the cylinder. Hole SawĪ hole saw is a circular saw blade with teeth on its edge, enabling it to cut out circles. They are perfect for drilling through wood quickly and easily at high speeds. Finishing the piece from the other side helps woodworkers prevent splinters. On the downside, they tend to cause splintering when they emerge from the workpiece. They are commonly employed in construction projects for rough boring wood. Diameters range in size from 6mm to 36mm, or ¼ inches to 1½ inches. Paddle or spade bits have a sharp pointed flathead, removing large amounts of chips. As self-feeding “forces” cordless drills to maintain speed, torque may be a challenge. ![]() This makes them quick to use, as you don’t have to worry about keeping the bit steady. Self-feed bits are so named because they feed themselves into the material as you drill. Since it doesn’t have any flutes, you’ll need to pull it back periodically to clear the dust and chips. Self-Feed BitĪ self-feed drill bit, similar to the sawtooth, has a threaded end that pulls the bit through the wood swiftly. The teeth cut into the end grain, preventing the bit from skating across the surface. When boring into end grain, sawtooth bits are the preferred choice. Versatile for a variety of purposes, they can cut overlapping holes. Invented for gunsmiths, they create flat-bottomed holes apart from a small indentation. Most commonly found in drill presses and lathes but can also be utilised with hand-held tools. Forstner Bitįorstner drill bits can drill larger diameter holes in timber than other tooling can. This allows you to easily place electrical wires in tight spaces. Electricians use these long, skinny “bell hanger” bits for pulling wires or similar installation work.īesides their long length, they have a hole near the tip for use with pulling wire. Installer drill bits are a specialised tool to install difficult wiring. Suitable for unusually thick applications, they will cut through nails without tool damage. ![]() Ship auger bits are a particular type of tool included in this category. It is possible to use with an electric drill, though it will pull through at an alarming rate and no control, better off in a hand brace. They feel more rigid and robust, making them an excellent option for tougher projects. It is 18 inches long, so it can go deep into timber. The auger bit is ideal for drilling through tougher materials. They also offer a more energy-efficient solution. Augers produce cleaner holes than regular woodworking drill bits. The auger drill bit has a threaded tip that can cut a large deep hole. With a clean cutting action for precise dowel holes in wooden workpieces between 3 – 13mm. A (lip and spur) bradpoint centres itself, so you don’t have to worry about drifting. The cutting action is clean and sharp, preventing splintering on the exit hole. Woodworkers know that a brad point drill bit is best for hardwood and softwood. This allows for greater accuracy and stability when drilling. A Brad point bit has a sharp point to position the workpiece with two spurs for cutting. ![]()
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