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What are the difference between drill bits?
High-speed steel (HSS) drill bits can drill wood, fiberglass, polyvinyl chloride (PVC) and soft metals such as aluminum. Cobalt drill bits are extremely hard and dissipate heat quickly. Carbide-tipped drill bits stay sharp much longer than steel, HSS or titanium bits. They’re effective for drilling tile and masonry.
What do you use Forstner bits for?
Forstner bits are unique in their ability to drill overlapping holes, notches on the edges of a workpiece, and angled holes on the face of a workpiece (pocket holes, for example). The bit will cut whether or not the center spur is engaging the workpiece.
What is a countersink bit?
A countersink (symbol: ⌵) is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A countersink may also be used to remove the burr left from a drilling or tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
What is the purpose of using a countersink drill?
Countersinking is done to insure that flat head screws sit flush to the work piece. A countersink produces a conical hole matching the angle of the screw so that when the screw is fully engaged the head will sit flush or slightly below the surface.
What is a brad point drill bit?
Brad point drill bits are specially designed to drill and bore clean holes in hard and soft woods without wandering. These drill bits have been designed with a center pin as seen in the images below and on the right.
Why is it important to know the difference between drill bits?
It is important to know the difference between them to ensure you choose the right tool for the job. There are 4 main types of drill bits, sorted according to the material that they are designed for use on. The categories are wood, timber, and plastics; stone and masonry; glass and tiles; and metals and other materials.
How do you identify a split-point drill bit?
Many split-point drill bit manufacturers do not specifically mark their bits with the “split-point” designation. This can make these superior bits more difficult to find at your local hardware store or online. Determine if a bit is a split-point bit by closely examining either the image of the bit or the bit itself.
Which drill bit should I use for small holes in wood?
Twist bits can cause splintering, particularly on the backside of work. These are the best choice for most small-diameter holes in woodworking. The brad point allows you to locate the bit precisely, and keeps it from wandering.