Posted by Tool Man | Posted in Power Drill | Posted on 09-08-2010
Tags: concrete drill, concrete drill bit, drill bit
Types Of Drill Bits
By: Dave Text
Drill bits are tools used in making cylindrical holes. Various types of drill bits are designed for different uses.
Drill bits are equipments or tools that are used in making cylindrical holes. Drill bits can also be referred to as a drilling machine. Drill bits are available in various drill types such as metal drills, gun drills, screw machine drills, core drills, step drills, spade drills, forstner drills, masonry drills, dental or surgical drills, wood bits, twist drills, drill blank taper drills and much more.
They are designed to cut while doing a clockwise rotating motion. Several drill bits are coolant fed. They contain a channel or hole for directing the coolant fed near to the cutting edges. The split point drill heads of drill bits are used for chip clearance and for excellent centering. Drill bits can also be used in cutting aluminum, general-purpose metals, brass, copper, bronze, ceramic, and plastic, stainless steel, steel, wood, titanium and hardened materials. Various types of drill bits are designed for different uses.
Listed below are some types of Drill Bits.
Twist Drill: It drills holes in plastic, metal and wood. This drill is currently produced with a width covering a range from 0.05 millimeters to 100 millimeters while its length is around 1000 millimeters. The most usual twist drill has a tip angle of 118 degrees. This is a proper angle for an extensive array of job. It also has a long series drill for extended length twist drills. It is not advisable to drill deep holes using this twist drill.
Diamond Drill Bit: This particular drill is used in the bathroom for updating or remodeling. It is also used in redesigning your kitchen decoration. Furthermore, it is used on ceramic, glass, tile, limestone, stained glass, marble, fiberglass, porcelain, stone, slate and porcelain tile. When using this drill, the main concern is to obtain water at the edge of the drill bit. Drilling fiberglass may be done with or without water but make sure that the fiberglass has ample amount of water just to get the drill wet.
Indexable Drill Bit: This provides an excellent performance in making short-hole drillings. Stainless steel is drilled 3x in diameter and only a short-hole must be done.
Listed below are some other types of drill bits
Adjustable Bit: This is built with a changeable cutter blade to bore holes of various sizes. It is also used for drilling gaps for wiring or piping.
Around-the-corner bit: It is used to cut arched holes that are stretched in corners with a diagonal cutting surface.
Auger Bits: This drill creates drill holes in wooden materials. The drill ends have a screw head so that the bits may be self fed.
Brad-point drill: This drill looks almost the same as the usual bits but it has sharpened point to make wood drilling a lot easier. This drill has cleaner holes other than spade bits.
Counterbore: The drill allows a screw to be driven under the wood outside. The holes that are drilled may be filled with a plug or wire.
Drill Saw Bit: It is used to cut holes such as wood and metal and can enlarge current holes.
Countersink: A drill that has an angled tip design that forms a "slump" in the screw head.
Fly cutter: This one is often used to cut circles in wood and other soft metals. The diameter of circles may be adjusted by changing the cutter blade setting.
Hole saw: It cut holes from one to six centimeters in diameter and has a center bit for directing the cutting blade edge of the saw.
Reamer bit: The tapered bit of reamer may be used on existing holes rather than to enlarge holes.
Screw pilot bit: This beautiful bit is used for drilling body holes. A pilot hole is used along with the countersink.
Wire Brushes: It use to remove rust and to clean up metal and is available either as a wheel or a cup with wire brush.
Plastic bit: This is designed with a tip so as to prevent splintering when drilling plastic. It is important to reduce the speed and slowly drill the other side of the plastic.
Plug cutter: Use this to remove cylindrical shapes from the wood. It covers the screw using a small cylindrical plug.
About the Author
For more information on Diamond Drill Bits please visit our website.
How can you tell the difference between a concrete bit and a wood bit?
It sounds like a joke, but it's not! I have a couple of 4mm drill bits, and I think one is concrete, and one is wood. I can't decipher the writing on them. How else can I guess which is which?
A wood drill bit will usually be pointed on its end, so it can easily cut into wood or metal.
A masonry bit will usually have a flat carbide fin wedged in the tip of the bit. The carbide 'fin' is Very hard - it dose not cut through the cement, it just pulverizes/breaks it up.
here is a link from home depot, show a picture of a Masonry bit.
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100086567&N=10000003+90401
Diamond drill bit Product Demonstration Live from the 2009 DEWALT World of Concrete
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 7 concrete core drill bits hammer drills SDS  US $115.00 |  3 concrete core hammer drill bit drills US $43.00 |  ITW HELLER 1 3 8 X 22Concrete Masonry Drill Bits US $9.99 |
 10mm Width Tip 220mm Spiral Flute Masonry Drill Bit US $7.86 |  14 x 200mm Four Hollow Square Shank Masonry Drill Bit US $7.66 |  Drilling Concrete Spline Hammer Drill Bit 6mm Width US $8.13 |
 Concrete Stone 10mm Dia Twist Gray Masonry Drill Bit US $5.53 |  SDS Plus Shank 12mm Tip Double Flute Masonry Drill Bit US $4.09 |  Gray SDS Shank 10mm Tip Drilling Masonry Drill Bit Tool US $6.18 |
 Replacement 12mm Tip Gray Masonry Drill Bit for Stone US $5.86 |  GRK Claiburn 1 4x1 3 4 screws 50pk 2094 US $31.14 |  GRK Caliburn 1 4x2 1 4 screws 50pk 2113 US $33.08 |
 GRK Caliburn 1 4x2 1 4 screws 50pk 2114 US $33.08 |  SDS Plus Shank Concrete Hammer Dril Bit 160mm Length US $3.88 |  340mm Length SDS Plus Shank Drilling Bit for Concrete US $9.84 |
 6mm Tipped Wood Stone Cutting Drill Bit 63 Length w Case US $5.77 |  8mm Tip SDS Plus Shank Drill Bit Gray for Rotary Hammer US $9.25 |  10mm Width Tip SDS Plus Shank Concrete Masonry Drill Bit US $10.65 |
 Four Hollow Square Shank 10mm Width Hammer Drill Bit US $4.36 |  Concrete 8mm Width Drilling Tip Masonry Twist Drill Bit US $8.35 |  8mm Tip Spiral Masonry Drill Bit for Stone Concrete US $4.85 |
 Hardware Tool 10mm Shank Dia 6mm Width Hammer Drill Bit US $4.25 |  Hardened 10mm Shank Dia 14mm Width Hammer Drill Bit US $6.76 |  Four Hollow Square Shank Tip Hammer Drill Bit 14mm US $7.68 |
 Concrete Stone 6mm Tip Straight Shank Masonry Drill Bit US $4.65 |  10mm Wide Tip Straight Shank Drill Bit 145mm Length w Case US $6.53 |  10mm 039 Tip Spiral Flute Hammer Drill Bit 571 Length US $6.51 |
 10mm Width Hard Alloy Tip SDS Plus Shank Concrete Hammer Drill Bit US $5.03 |  DEWALT Hammer Drill Bit SDS 3 4 D 10 In OAL US $44.99 |  12mm Width Tip SDS Plus Dia 12mm Width Hammer Drilling Bit US $5.29 |
 10 x 200mm Four Hollow Square Shank Hammer Drill Bit US $9.07 |  3 3 4 concrete core drill bit SDSMAX SPLINE US $52.00 |  10mm Dia Round Shank Masonry Stone Hammer Drill Bit US $4.53 |
 14mm Tip Width Gray Metal SDS Shank Masonry Drill Bit US $7.45 |  Stone Concrete Gray Metal 14mm Masonry Hammer Drill Bit US $6.97 |  10mm Dia Shank Concrete Hammer Drill Bit 200mm Length US $6.54 |
 12mm Width Tip SDS Plus Shank Masonry Hammer Drill Bit US $5.59 |  10mm Dia SDS Plus Shank 6mm Tip Rotary Hammer Drill Bit US $4.87 |  Four Hollow Square Shank 16mm Tip Masonry Drill Bit US $5.73 |
 8 x 120mm Four Hollow Square Shank Masonry Drill Bit US $8.35 |  SDS Plus Shank 12mm Tip Masonry Stone Hammer Drill Bit US $7.36 |  Hilti SDS Plus C Drill Bit 13 16 x 18 TE CX US $28.00 |
 120mm Spiral Flute 10mm Width Tip Hammer Drill Bit Tool US $5.63 |  SDS Shank 16mm Tip Gray Masonry Drill Bit for Plaster US $7.06 |  14mm Width Tip 160mm Length Concrete Hammer Drill Bit US $9.41 |
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