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CNC Drill Bits for CNC Machining in Kingston

CNC machining in Kingston works by incorporating different computer controls and automation. Certain manufacturing capabilities are enhanced with the computer numerical controls (CNC) parameters. Tasks that were considered impractical can now be accomplished quickly with higher precision.


While CNC is still dependent on its CNC machinery, selecting an appropriate component and machine tool is of high priority regardless of the level of automation in a system. The type of drill bit used in drilling machines like mill and routers can have a significant influence on the final product. The feed and depth rate in a drilling cycle, as well as the frequency of specific drilling operations, can be controlled by CNC programming. It can be designed to match various production needs and allows an automated machine to specialize in a range of fabrication projects.


A wide variety of drills exists in CNC machining in Kingston. They could come in twist, insert, and other formats. It actually depends on several factors when selecting a drill bit suitable for a given application. Such factors are metal types to be drilled, thickness of workpiece, and the speed at which production needs to be accomplished. Let us discuss further the types of drills you can have for specific categories.


Drill Bits for CNC Metal Fabrication


Ejector Bit

Mostly used in deep hole drilling operations, ejector bits can be equipped with single or multiple cutting heads. The single head version comes with one cutting edge on its side that creates large radial holes. In order to produce an even wider diameter holes, multiple bits are used. Brazed carbide tips near the center line are often found on multiple bits to improve the cutting balance.


Spade Drill Bit

This type of drill bit is a two-part device. It consists of a metal body and a removable bit attached into a precise slot. Spade drill bit can eliminate long chips that clogs the drilling area. This is usually because of its twist format that comes with special notches along the cutting edge.


Indexable Bit

An insert drill bit that is mostly employed in computer-controlled fabrication. Indexable bit features ceramic inserts that serve as cutting edges for inner and outer spans of the cut. Moreover, it acts as a hardened cutting tip to reduce the need for re-sharpening. It can rapidly drill and produce holes up to five times the diameter of the drill shaft.


CNC Drill Bits for Woodworking

CNC drill bits for woodworking are set apart from metal fabrication varieties mainly because they have their own specifications. They may be requiring less force in producing holes and sharpening less frequently. Woodworking drill bits are commonly seen in CNC lathes and milling machines. These are the ones that allow high volume or operations that are often carried out efficiently.


Dowel Bit

A standard twist drill design that is also called “lip and spur” bit. It comes with a sharp center point that increases the precision, and two adjoining cutting spurs in order to make fast and accurate holes. As similar to indexable bit, dowel bits can also be equipped with specialized inserts to further improve the cutting balance.


Flat Bit

Featuring a flat cutting edge and a sharp center point or screw-like threads, flat bit can rapidly drill holes. It is often used with a pumping device that blows away excess sawdust. This is mainly because of the risk of wandering when drilling thick materials.


Augur Bit

This drill bit is a twist-based with a wide cutting edge and a single outer spur that cuts into the wood ahead of the edge. Additionally, it features coiled threads helping channel sawdust away from the cutting point. Unlike flat bits, Augur bits drill slower but provide a higher degree of accuracy.


Twist Drill Bit & Insert Drill Bit

These two drill bits are the two general design categories in CNC machining in Kingston.

Insert drill bits function without relying on a grind wheel. They are usually inexpensive which can cost you less when replacing, eliminating the need for drill sharpening. Also, insert drill design is relatively easy to use and have a ground structural point that helps center the drilling operation. On the other hand, a burr at the hole’s exit can be left, often requiring post-drilling smoothing treatments. Once broken, it can also damage the tool holder, which may also require replacement.


Twist drill design is a much more common alternative featuring a winding, corkscrew flute pattern. The sharpness and shape of the flutes are central to the drill bit’s operation, which often requires sharpening along a tool grinder. Sometimes, a training may be needed in order to learn how to handle a twist drill bit. But, aside from the costs of grinder and sharpening, the drill bit itself is generally less expensive compared to most insert drill bits. Additionally, twist bit has lesser chance of producing burrs in an exit hole, reducing the need for time-consuming deburring treatments.

Final Thoughts


CNC machines and CNC programming take charge of controlling the production needs. From the feed and depth rate in a drilling cycle, up to the repetition of specific drilling operations. However, choosing a well-suited CNC drill bit will remain the manufacturer’s decision.


Co-op Concept and Fabrication is a full-service shop based in the heart of New York. We work on designs, fabrication, and logistics as we partner with agencies, brands, architects and unique individuals. With quality and efficiency in mind, we go above and beyond to form credibility and lasting relationships.

If you are interested to know how Co-op Concept and Fabrication can help you with one of the CNC capabilities in Kingston, give us a call! You may also check out our recent works to give you broader information on what we do in our fabrication shop in New York.

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