By varying the drill tip design, one can optimize the machining of different types of material.

Spade drill bits are flat, and come with a centering point and two cutters normally used for rough boring in wood. Just as the name suggests, they resemble a spade in shape.

The material used to make the bits also matters. Wood bits can be made of steel, titanium coated, black oxide coated, diamond coated or carbide tipped. This determines the bit’s durability and how long it retains the sharpness. Diamond coated will last longer and stay sharp for longer than most other types.

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Self-feed drill bits are designed in a way that the center screw pilots and/or pull, the bit through the materials for easier and more accurate drilling.

There are different types of drill bits all with a distinct shape and purpose. Although the primary role is to drill holes through metal and wood, each one of them has a unique purpose. The main difference between each one of them is the shape. The different types of drill-bits include; auger drill bits, spade drill bits, boring drill bits, ship auger bit, forstner drill bits, brad-point drill bits, self-feed drill bits, taper point drill bits and countersink drill bits.

Some of the most important factors to consider when getting a boring drill are its accuracy, strength and how easy it is to sharpen. The Klein Tools 53932 Wood Boring Bit is a 22mm strong and durable bit with heavy-duty steel construction. It comes a sophisticated cutting head design that allows the user to customize the shape of the hole. The head is designed to ensure minimal vibration when drilling. This is why using this bit produces minimal noise unlike other bits. This particular bit is applicable on many drills, both manual and electric of between 3/8'' and 1/2'' in size. The steel construction and design makes the Klein Tools 53932 Wood Boring Bit easy to sharpen.

Bits are powered both by electrical or manual driven drills. It is important to know what type of drill you will be using since some bits may not be universally powered.

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A few considerations have to be made before settling on a particular type of drill-bit for wood. The most important is the type of wood to be worked on whether hard/soft or wet/dry wood. Although the bits are used for both dry and wet wood, some will give better results on either type of wood. The amount of energy used is also higher when working with hard wood than soft wood.

Self-feed drill bits are sophisticated and quite unique from all the other type of bits. Very few bits of this type are accurate enough for excellent results. The DEWALT DW1648 Self Feed Kit 5-Pieces Set is one of the most durable and accurate bits in the market. The bits are made from steel for durability and easiness of sharpening. The design makes it aggressive to ensure fast and accurate penetration. The shape and design of the head is optimized cutting geometry to give the tip a long life. The bit’s teeth are open to allow for easy re-sharpening. The bits range between 1-3/8-, 1-1/2-, 2-1/8-, and 2-9/16-inch in size. The pack measures 10.4 x 3.7 x 11.3 inches and weighs 4.2 pounds for easy portability. The company offers a 30 Day Money Back Guarantee if you purchase the set and end up not liking it.

Boring drill bits are used in automated machinery such as drill banks or CNC machines that are fitted with tool holders or single size collets. They have a cylindrical shape and a sharp pointer at the edge.

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Auger drill bits usually come as a rotating helical screw blade often referred to as "flighting" that drills and also acts a screw conveyor, removing the drilled out material. The manner in which the blade rotates causes the material being drilled to be removed out of the hole.

Irwin 40108ZR. copy to clipboard. Irwin 40108ZR General Purpose High Speed Steel Letter Size Straight Shank Jobber Length Drill Bit - Letter H - 12 Bulk Pack.

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This is a 14-Piece set of forstner drill bits made from hardened carbon steel. This guarantees durability and accuracy when drilling. The design enables the bits to drill easily through both soft and hardwood while getting rid of the waste. This gives accurate and clean holes that are relatively easy to drill. According to customer reviews in many sites, the PORTER-CABLE PC1014 Forstner Bit 14-Piece Set drills accurately with a lot of ease. The set comes with different bit sizes varying from 1/4 to 2 Inch. The pack measures 11.3 x 13.3 x 2.8 inches and weighs 4 pounds. The company offers a 30 Day Money Back Guarantee if you purchase the set and end up not liking it.

Forstner drill bits are named after the inventor Benjamin Forstner, are drills with a cutting rim or teeth around the perimeter and a small spur at the center. They are unique since the idea behind the invention was to bore exceptionally clean holes that leave a virtually flat bottom.

Taper point drill bits are engineered to be used to pre drill the pilot holes for the shank and threaded portion of a wood screw.

Here is a review of the best drill-bits for drilling wood in each category. Customer reviews from a number of authority sites as well as the expert opinions were put into consideration to come up with an unbiased review.

Spade drill bits are quite unique and getting the most accurate set may prove difficult. With over a century’s worth of experience in manufacturing wooden and metal tool, black and decker has one of the best spade drill bits. The company has been in the industry since 1843. The Black & Decker 71-536 1/4-Inch to 1-1/2-Inch Spade Drill Bit, 13-Piece Set comprises a set of thirteen drills of different sizes. They come with an enhanced steel construction that drills through all types of wood whether wet/dry soft or hard wood. According to customer reviews, the bits also worked perfectly on different types of plastic. The edges are accurate and sharp enough to give a precise result after drilling. The set contains drill-bits of different sizes ranging between 1/4-Inch to 1-1/2-Inch. They come in a convenience pack measuring 10.9 x 14.1 x 0.7 inches and weighing 8 ounces and comes with two-year limited warranty.

It is quite impossible to get top quality countersink drills bits. Many of them are not accurate and give wanting results after drilling. The DEWALT DW2535 3 Piece Countersink Assortment Set stand out from the other products in the category because of the accuracy and durability of the bits. Each bit is constructed from strong and durable steel and are compatible with many electric drills out there. According to customer reviews, the bits are easy to attach and detach from the drill. Beginners and amateurs in wood work find this set easy to use. The package measures 7.8 x 3.9 x 0.8 inches, weighs 1.9 ounces and comes with a one-year warranty.

Pilots for Counterbore Used with counterbore for guiding counterbore when drilling recessed holes into scales for Corby Bolts, Gulso Bolts, screws etc.

Countersink drill bit is a bit used to cut a hole of a bolt or screw, with a shape exactly matching the countersunk hole where it is supposed to sit.

Ship auger bits are quite different other types of bits. For wood work where nails are to be encountered in the wood, the ship auger bits are the most ideal. It works by drilling and getting rid of the waste simultaneously. The Irwin Industrial Tools 47416 1-Inch by 17-Inch Tubed Long Ship Auger Bit is one of the most efficient bits in the market. This 17-Inch ship auger bit is comes with steel-construction for durability. It comes with heat treatment guards that prevents bending even when nails are encountered while drilling. The sharp point and professional design makes it extra-precise, accurate and comfortable when drilling. The Irwin Industrial Tools Ship Auger Bit is compatible with many manual and electric drills.

Drilling bits are crucial wood/metal-work accessories that can be attached to an electric/manual screw-drivers to drill holes, remove screws etc. Drill-bits should never lack in any carpenter’s tool box or even in any family garage. There are tons of activities around the house that will require the use of a drill-bit like; pinning stuff to the wall, unlocking jammed doors etc.

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The DEWALT DW1587 6 Bit 3/8-Inch to 1-Inch Spade Drill Bit assortment is another set of spade drill bits worth considering if you intend to purchase one. The set comes with six bits of different sizes made of heavy duty shank to guarantee a precise and comfortable drill both on soft and hardwood. The bits are compatible with many drills in the market both electric and hand-powered drills. DEWALT is company that has been in the industry for a long time and their products are quality. The DEWALT DW1587 6 Bit 3/8-Inch to 1-Inch Spade Drill Bit Set is strong, durable and drills with precision and utmost accuracy. Customer reviews reveal that the set bits are easy to drill with, even for amateur and beginners in woodwork. The set comes with six bits with sizes varying between 3/8-Inch to 1-Inch. The bits come in a compact-size package measuring 8.8 x 5.9 x 0.2 inches and weighing just 9.3 ounces.

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Taper Point Drill Bits are engineered to be used to pre drill the pilot holes for the shank and threaded portion of a wood screw. The W L Fuller 10349003C Countersinks and Matching HSS Taper Point 3-set Drill Bits perform this with a lot of accuracy and precision. The set comes with a set of three bits made of high speed steel for durability and efficiency. Customer reviews showed that the set was one of the easiest to use unlike other taper point drill bits in the market. They drill accurately in to both hard and soft wood with impressive results. The package measures 8.4 x 4.1 x 0.9 inches and weighs 5.6 ounces for portability.

Gage Makers Tolerance Chart as defined by ANSI/ASME B89.1.5.

According to customer reviews in many sites, the DEWALT DW1720 Brad Point Bit 6-Piece Set is one of the top quality brad-point bits available in the market. Getting an accurate bit can be difficult but this one guarantees precision and accuracy when drilling holes. The set comes as a 6-Piece set of 1/8 to ½ inch sizes. Each bit is made of high speed steel for durability and to prevent bending, breakage or snapping when in use. The design ensures that the waste is disposed as drilling is being done. A sharp brand point tip makes it easy to penetrate both soft/hard wood with ease. The package measures 3.9 x 0.5 x 7.8 inches and weighs 6.9 ounces for portability.

For anyone looking for a top-quality set of auger drill bits, the Pit Bull CHIAU0600 9-Inch Auger Drill Bit is worth considering. It comes as a set of 6, nine-inch drill bits with a carbon steel construction. This is the perfect set for drilling clean and accurate holes on both hard and soft wood. The drill bits can be attached both to electric and manual powered drills and drill hole with a lot of ease. According to customer reviews on various websites, the Pit Bull CHIAU0600 9-Inch Auger Drill Bits are tough, sharp and retain the sharpness for a long time. They are available in different sizes including; 3/8", 15/32", 9/16", 5/8", 11/16" and 25/32" The entire set comes in a wooden package measuring 10 x 6 x 2 inches and weighing 2.7 pounds for convenient portability.