Table of Contents
- 1 How can you tell the difference between metal and masonry drill bits?
- 2 What determines the type of drill bit to be used?
- 3 What is the drill bit for metal?
- 4 Why are drill bits different colors?
- 5 How do you identify a drill bit?
- 6 How are drill bits measured?
- 7 What are the different types of metal drill bits?
- 8 What is the point angle of a metal drill bit?
How can you tell the difference between metal and masonry drill bits?
Masonry bits resemble wood bits at a casual glance because they’ll also have a deep spiral groove to help channel debris from the hole as you drill. The main visual difference is that masonry bits don’t have the blunt, gently rounded tip you’ll see on standard general-purpose bits.
What determines the type of drill bit to be used?
For most drill bit types, the angle of the point helps determine what type of material the bit can drill. Flatter points, such as those with 135-degree angles, are suited for drilling into harder material. They may require a pilot hole to keep the bit from wandering.
What type of bit is designed to drill glass?
In general, two types of drill bits can be successfully used on glass: tungsten carbide spear-tipped drill bits and diamond-tipped drill bits; there are also diamond-coated drill bits. Carbide-tipped drill bits are most commonly used for non-tempered glass, ceramics and tiles.
What is the drill bit for metal?
Cobalt drill bits are used for drilling hard metal and steel. They dissipate heat quickly and are highly resistant to abrasions, making them better for drilling into hard metals than black oxide- or titanium-coated drill bits.
Why are drill bits different colors?
If you’re drilling through hardened metal, even an HSS bit can wear out quickly, and you may need one made from tungsten carbide or titanium. The black or blue-gray color on metal boring bits comes from a coating or black oxide or titanium carbo-nitride, designed to reduce friction and extend bit life.
What two materials are twist bits designed to cut through?
Twist drills (also commonly referred to as twist bits) are the most widely used of all drill bit types; they will cut anything from wood and plastic to steel and concrete. They are most frequently used for metal cutting, so they are generally made from M2 high-speed steel.
How do you identify a drill bit?
Choosing Drill Bits by Type
- Wood Drill Bits: These can be identified by a small, pointed tip at the very end. If you look closely, you can see spurs on each side.
- Masonry Drill Bits: These bits have a gently sloping tip.
- Metal Drill Bits: These have a wide-angled point at the end, and they may also be painted black.
How are drill bits measured?
Typical drill bits have markings somewhere on the shank above the threads. It’s small, but it usually has the drill-bit diameter stamped into the metal; the number is written in fractions. For example, the markings may read: 1/4-inch, 3/6-inch or 25/32.
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.
What are the different types of metal drill bits?
The most common type of metal drill bit is the HSS twist drill. These can be found in almost all the hardware and tools shops. They are made in a variety of materials, such as high carbon steel, high-speed steel (HSS), Cobalt, and carbide.
What is the point angle of a metal drill bit?
The point angle of a general-purpose metal drill bit is 118° while bits designed for drilling harder material may be ground to an angle up to 135°. The helical flutes carry the curled metal chips out of the hole from the cutting area. The most common type of metal drill bit is the HSS twist drill.
What are masonry drill bits used for?
The flutes and faces of masonry drill bits are ground down in a specific way. This is what makes these drill bits so suited to drilling through breeze block, concrete, asphalt, masonry, and other abrasive materials. These come in sizes ranging from 4 to 16 mm in diameter.