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CNC Drill Bit Guide

Many aspects go into selecting the type of bit you should be using with your CNC machine. This guide and infographic will help you in that process.
November 4, 2020

Many aspects go into selecting the type of bit you should be using with your CNC machine. This guide and infographic will help you in that process.

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Within this article, we will go through the following types of bits:

Material

One of the first questions you need to ask yourself when deciding what drill bit to go with is the material. Whether you're looking for a quick and easy pick or a long-lasting solid choice, the material of your bit is essential. Here is a breakdown of the different materials.

High-speed steel

Cobalt steel

Carbide-tipped

Carbide bits

Finish

Uncoated bits

Black-oxide and black-and-gold-oxide bits

Titanium-nitride (TiN) coated bits

Titanium-aluminum-nitride (TiAlN) and aluminum-titanium-nitride (AlTiN) coated bit

Length Class

Jobbers'-length bits

Maintenance-length bits

Short-length bits

Extended-length bits

Reduced-shank length bits

Taper-shank length bits

Bit Style

Spiral-flute bits

Parabolic spiral-flute bits

The Final Product

Despite the ever-changing roles of computer controls, CNC production is still widely dependent on machinery. This makes choosing the accurate machine tools and parts a pivotal part of the process.

For drilling machines, like routers and mills, the drill bit choice has a significant influence on the product's production. Whether it is material, finish, length, or style, choosing the right tool is pivotal.

Make sure to use our quick guide infographic to understand better how bits stack up against one another.