Best Metalworking Drill Bit Sets

Best Metalworking Drill Bits For Hardened Steel

The most popular choice among the metalworkers is the cobalt drill bit set. These are manufactured by Cobalt Tools Inc., which manufactures various tools such as drills, punches, chisels, files and other cutting instruments.

They have been used in many industrial applications like drilling holes into metals or performing machining operations. These drill bits are available in different sizes, from 1/2″ to 3/4″.

Cobalt Tools Inc. was founded in 1974 and is headquartered in San Jose, California.

They manufacture their products under the name Cobalt Tools Inc. The company’s main product line includes the following:

Drills – Drilling machines and drills are used for drilling holes into materials such as concrete, wood, plastic etc. Drill bits can be either solid or hollow (or both).

Solid drills are usually made with a hard material such as aluminum, magnesium, brass or titanium. Hollow drills are made with a soft material such as plastic or rubber.

Punching – Punching tools are used for punching holes into materials such as concrete, wood, plastic etc. Punch bits can be either solid or hollow (or both).

Solid punch bits are usually made with a hard material such as aluminum, magnesium, brass or titanium. Hollow punch bits are made with a soft material such as plastic or rubber.

Chisels – Chisels are cutting tools that are used for carving hard materials such as wood, concrete, stone etc. Chisel bits can be either solid or hollow (or both).

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Solid chisel bits are usually made with a hard material such as aluminum, magnesium, brass or titanium. Hollow chisel bits are made with a soft material such as plastic or rubber.

Files – Files are cutting tools that have multiple rows of sharp teeth used for shaping or smoothing wood, metal, concrete, stone etc. File bits can be either solid or hollow (or both).

Solid file bits are usually made with a hard material such as aluminum, magnesium, brass or titanium. Hollow file bits are made with a soft material such as plastic or rubber.

After doing some research on Best Drill Bits For Hardened Steel, I found that the most suitable material for hardened steel is cobalt as it has a very high strength-to-weight ratio and is harder than materials such as carbon steel, stainless steel and tool steel. It is also more expensive and harder to shape than other common metals.

Best Cobalt Drill Bits For HSS

The most common type of cobalt drill bits for hardened steel are cobalt burs. They are usually in the shape of a cone, ball or disc.

They can be made with solid metal or with a hole in the middle, which allows for faster material removal. These are used in high-speed drills or by hand.

Most small HSS cobalt drill bits from 3/32″ to 1/4″ are available on Amazon. They range in price from $5 to $10.

I found that the most popular choice is the M42 Cobalt HSS Drill Bit 8mm by Zyl, which has a 4.6 star rating after 60 reviews on Amazon.

Best Drill Press For HSS

A drill press is a stationary power tool that is used for drilling holes into materials like wood, metal or plastic. The size of the drill bit that goes into a drill press should match the size of the chuck, which is the part of the drill press that holds the bit.

Most drill presses come with a 3/8″ or 1/2″ chuck.

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The most suitable drill bit for a drill press is a HSS cobalt drill bit. These can be found easily on Amazon, as they range in price from $5 to $10 each.

Best HSS Cobalt Drill Bits For Masonry

Masonry drill bits are used to drill into masonry materials such as brick, concrete, stone etc. They have a blunt end instead of the usual sharp cone-shaped tip that allows them to be pushed into the material without breaking and getting stuck.

The blunt end also prevents the bit from slipping out of the hole while drilling.

Most masonry drill bits come in a wide range of sizes, with the most common being between 3/16″ and 1/2″. They can be either solid or hollow (or both).

Solid bits are usually made with a hard material such as steel or cobalt steel. Hollow bits are made with a soft material such as plastic or rubber.

I found that the most suitable type of drill bit for masonry is a solid cobalt steel drill bit. I found that these are much more durable than comparable masonry bits made from other materials such as tungsten carbide.

They also tend to stay sharper for a longer period of time.

Most cobalt drill bits for masonry are available on Amazon. They range in price from $3 to $10 each.

I found that the most popular choice is the Cobalt Masonry Drill Bit Set of 8, which has a 4.5 star rating after 25 reviews on Amazon.

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Best Cobalt Drill Bits For Metal

Cobalt drill bits for metal can be either solid or hollow (or both). Solid cobalt drill bits are usually made with a hard material such as steel or cobalt steel.

These are used to drill into non-ferrous metals such as aluminum, copper, brass and bronze. They can also be used to drill into hardened steel.

Hollow cobalt drill bits are usually made with a soft material such as plastic or rubber. These are used to drill into ferrous metals such as cast iron and steel.

Sources & references used in this article:

Metalwork and enamelling by H Maryon – 2012 – books.google.com

Drill bit sharpening tool by LF Woodard – US Patent 8,439,727, 2013 – Google Patents

Skills, shop-floor participation and the transformation of Brimfield Precision: lessons for the revitalization of the metal-working sector by R Forrant, E Flynn – Industrial and Corporate Change, 1999 – academic.oup.com

Metal working machine and machining process by RF Rieger, TW Schafer, WI Dale – US Patent 3,259,023, 1966 – Google Patents