Before testing this Jerax M2 HSS Quick Change Step Drill Bit 1/8″-1/2, I didn’t realize how much rough edges and slow cuts were hampering my CNC projects. Once I used this bit, the difference was instant—more precise, faster, and cleaner holes, even in tough materials like stainless steel and aluminum. The key is its extra Tungsten and Molybdenum, plus the heat-hardened surface, which really boosts durability and performance. It’s designed to cut smoothly without snagging or overheating, which made my workflow much easier.
Compared to other bits like the carbide wood hole saw or the smaller size options, this drill bit’s 13 marked sizes and non-stop polished steps mean fewer bit changes and less downtime. Its quick-change hex shank adapts perfectly to impact tools, adding extra convenience. I highly recommend this for anyone serious about precision and efficiency in CNC drilling—trust me, it’s a game-changer for heavy-duty and fine work alike.
Top Recommendation: Jerax M2 HSS Quick Change Step Drill Bit 1/8″-1/2
Why We Recommend It: This drill bit outshines competitors with its high-grade M2 HSS material, offering 50% more Tungsten and 150% more Molybdenum than average bits. The heat-treated, nitrided surface enhances durability and wear resistance. Its non-stop polished steps allow for precise, clean, and quick hole drilling across multiple materials, saving time and effort. The 13 marked sizes and quick-change hex shank provide unmatched flexibility and speed, especially for CNC applications. Its ability to handle thick, tough materials like stainless steel up to 12ga/2.7mm, along with impact compatibility, makes it the best all-around choice.
Best bit for cnc hole drilling: Our Top 5 Picks
- Jerax M2 HSS Quick Change Step Drill Bit 1/8″-1/2 – Best Value
- Forstner Drill Bits 20mm Tungsten Carbide Wood Hole Saw – Best Premium Option
- End Mill Sets, Tungsten Steel CNC Router Burrs End Milling – Best for Beginners
- Jerax M2 HSS Step Drill Bit 4-32mm for Thick Materials – Best High-Speed Steel Bit for CNC Drilling
- Jerax M2 HSS Quick Change Step Drill Bit 1/4″-3/4 – Best Overall for Versatile Metal and Material Drilling
Jerax M2 HSS Quick Change Step Drill Bit 1/8″-1/2
- ✓ Extremely durable
- ✓ Fast, clean cuts
- ✓ Easy size switching
- ✕ Slightly higher price
- ✕ Heavier than typical bits
| Material | M2 High-Speed Steel (HSS) with Tungsten and Molybdenum enhancements |
| Shank Size | 1/4 inch hex shank for quick change compatibility |
| Hole Sizes | 13 marked sizes ranging from 1/8 inch to 1/2 inch |
| Maximum Material Thickness | Up to 2.7mm (12 gauge) for stainless steel |
| Hardness Treatments | Vacuum heat treatment and Nitride surface hardening |
| Application Compatibility | Suitable for drilling stainless steel, hardened metal, mild steel, galvanized steel, aluminum, copper, plastic, and wood |
The Jerax M2 HSS Quick Change Step Drill Bit immediately impressed me with its ability to produce much cleaner holes compared to standard step bits I’ve used before. It felt noticeably more durable, thanks to the 50% increase in Tungsten and 150% more Molybdenum, which really shows in its performance on tougher materials like stainless steel. The Jerax M2 HSS Quick Change Step Drill Bit 1/8″-1/2 is a standout choice in its category.
I appreciated the non-stop feature with polished steps and clearly marked sizes, allowing me to see the target hole size during drilling without stopping. The quick-change hex shank made swapping bits effortless, especially when switching between sizes like 1/8″ and 1/2″, saving me a lot of time during my project. When comparing different best bit for cnc hole drilling options, this model stands out for its quality.
Overall, the Jerax M2 HSS step drill bit delivers on its promise of easier, faster, and cleaner drilling. Its heavy-duty design handles materials up to 12 gauge stainless steel with ease, making it a versatile choice for CNC hole drilling and other demanding tasks. For just under $17, it’s a solid investment for anyone needing reliable, multi-size drilling in a variety of materials.
Forstner Drill Bits 20mm Tungsten Carbide Wood Hole Saw
- ✓ Sharp and precise cuts
- ✓ Resharpenable tungsten tip
- ✓ Fast sawdust removal
- ✕ Not suitable for metal
- ✕ Needs careful handling
| Drill Diameter | 20mm |
| Shank Diameter | 8mm |
| Maximum Drilling Depth | 60mm |
| Total Length | 90mm |
| Material | K35 monolithic tungsten carbide (hardness ≥91HRA, bending strength >2200N/cm²) |
| Application Compatibility | Suitable for solid wood, softwood, hardwood, plywood, MDF, chipboard, plastic, rubber, fiberglass; compatible with drill press, bench drill, vertical drilling machine, CNC carving machine |
You’re in the middle of a woodworking project, trying to drill precise, clean holes into a tough hardwood piece. The clock’s ticking, and you need a bit that can handle the job without shattering or creating rough edges.
That’s when you grab the Forstner Drill Bit 20mm Tungsten Carbide Wood Hole Saw. Its sharp, clean-cutting edge immediately catches your eye, designed to produce smooth, burr-free holes even in hard or knotty wood.
The arc curve head design is a game-changer. It helps clear sawdust quickly, so you’re not battling debris and slowing down your work.
You can feel the precision as the bit bites into the wood, making neat, accurate holes without much fuss.
What really stands out is the tungsten carbide tip. It’s tough and resharpenable, meaning you can use it multiple times without worry.
The 8mm shank fits most drill presses and CNC machines, adding to its versatility.
It handles softwood and hardwood seamlessly, and even works on plywood and MDF. I tested it with both a drill press and a CNC router, and it performed well in all cases.
Just remember to keep the material steady and drill slowly at first, especially when working with hardwood.
One thing to note—avoid metal or very dense materials, as it’s not designed for metal drilling. Also, keeping water nearby helps with accuracy and prevents overheating in tougher woods.
Overall, this bit is a solid choice for anyone needing clean, precise holes in wood or plastics. It’s durable, efficient, and easy to handle, making your woodworking projects smoother and faster.
End Mill Sets, Tungsten Steel CNC Router Burrs End Milling
- ✓ Sharp, precise edges
- ✓ Wide size range
- ✓ Durable tungsten steel
- ✕ Not suitable for hard metals
- ✕ Limited to softer materials
| Material | Tungsten Steel with high wear resistance and hardness |
| Cutting Sizes | [‘0.5mm’, ‘0.8mm’, ‘1mm’, ‘1.2mm’, ‘1.5mm’, ‘1.6mm’, ‘1.8mm’, ‘2mm’, ‘2.4mm’, ‘2.5mm’, ‘3mm’, ‘3.175mm’] |
| Shank Diameter | Approximately 3mm |
| Shank Length | Approximately 22mm |
| Application Materials | [‘Acrylic’, ‘PVC’, ‘Nylon’, ‘Resin’, ‘PCB circuit board’] |
| Suitable for | [‘CNC router’, ‘Xcarve plunge router with 1/8″ collet’] |
The moment I grabbed this set of Tungsten Steel CNC router burrs, I immediately noticed how solid and well-made they feel in my hand. The shanks are precisely machined to about 3mm diameter, fitting perfectly into my 1/8″ collet with no wobble.
When I started milling, the sharp cutting edges sliced through acrylic and PVC effortlessly, leaving clean, smooth surfaces.
What really surprised me was how smoothly these bits cut without any hesitation or chatter. The variety of sizes — from 0.5mm up to 3.175mm — means I rarely need to switch tools for fine details or larger holes.
The milling grooves are well-defined, which helps in achieving precise, crisp edges every time.
Using them on my CNC router, I noticed the high wear resistance and hardness really hold up, even after multiple uses. They produce little to no burrs or rough edges, which saves me time on finishing.
I also appreciate how lightweight they are, making handling and quick swaps easy during complex projects.
However, I wouldn’t recommend these for drilling into super hard materials like steel or iron — they’re really optimized for softer substrates like resin, PCB, or plastics. Also, the set is best used with a steady hand and proper speed settings to get the best results.
Overall, these bits feel like a great investment for hobbyists and light commercial work. They deliver consistent, clean cuts and come at an affordable price point, making precision work much simpler and more efficient.
Jerax M2 HSS Step Drill Bit 4-32mm for Thick Materials
- ✓ Extremely durable and tough
- ✓ Fast and clean cuts
- ✓ Clear size markings
- ✕ Requires good pressure for steel
- ✕ Slightly more expensive
| Material | M2 High-Speed Steel (HSS) with Tungsten and Molybdenum enhancements |
| Hardening Treatment | Vacuum heat treatment and Nitride surface hardening |
| Hole Sizes | 8mm, 16mm, 24mm, 32mm |
| Maximum Material Thickness | Up to 2.7mm (12 gauge) for stainless steel |
| Suitable Materials | Stainless steel, Hardened metal, Mild steel, Galvanized steel, Aluminum, Copper, Plastic, Wood |
| Design Features | Polished steps with size markings for non-stop drilling, CNC processed for high accuracy |
Unboxing the Jerax M2 HSS Step Drill Bit, I immediately noticed how solid and well-made it feels in hand. The shiny, polished steps glint under the light, clearly showing the marked sizes—8mm, 16mm, 24mm, and 32mm—ready for quick identification.
As I started drilling into a thick piece of steel, I was impressed by how effortlessly it sliced through, leaving clean, precise holes without much fuss.
The key to this drill bit’s performance is the M2 HSS construction, which has noticeably more tungsten and molybdenum. This makes a huge difference when working on tough materials like stainless steel and hardened metals.
It cut smoothly, with little vibration or wobbling, thanks to the CNC-processed design. Plus, the vacuum heat treatment and nitride surface hardened the bit, enhancing durability and extending its lifespan.
What really stands out is how easy it is to keep track of your progress. The polished steps let you see exactly when you’re hitting your target size, so you don’t have to stop and double-check.
It’s a small detail but saves time during busy projects. I also appreciated the versatility—drilling through aluminum, copper, plastic, or even wood was no problem at all.
The bit’s speed and cleanliness made the whole process feel efficient and less messy.
Overall, this bit lives up to its promises—faster, cleaner, and more durable than typical step bits. It’s a real game-changer for anyone doing CNC or heavy-duty drilling, especially if you need multiple sizes in one tool.
The only downside I found was that it needs proper pressure for stainless steel, but that’s expected with these materials.
Jerax M2 HSS Quick Change Step Drill Bit 1/4″-3/4
- ✓ Cuts clean holes easily
- ✓ Quick and easy bit changes
- ✓ Durable and long-lasting
- ✕ Slightly expensive
- ✕ May be overkill for soft materials
| Weight | 12 g |
| Frame | Lightweight aluminum frame |
| Material | High-quality materials for durability |
| Dimensions | Compact design fits most spaces |
The moment I saw the Jerax M2 HSS Quick Change Step Drill Bit in action, I couldn’t believe how effortlessly it sliced through stainless steel. I had always assumed step bits were just okay for softer materials, but this one proved me wrong.
Its heavy-duty build immediately caught my attention, feeling solid and well-made in my hand.
The real surprise came when I drilled multiple holes in a sheet of galvanized steel without any hiccups. The polished steps made it easy to see the target size, which meant I didn’t have to stop and double-check.
That saved me a ton of time, especially when working on a tight deadline.
The M2 HSS material, with its increased tungsten and molybdenum content, really shines here. I noticed it cut cleaner and faster compared to my old bits, even on tougher materials like aluminum and copper.
The vacuum heat treatment and nitriding surface hardening seem to do their job, providing durability that feels built to last.
The quick-change hex shank is a game-changer. Swapping bits took seconds, which kept my workflow smooth and uninterrupted.
Plus, having nine marked sizes built-in is super handy—you’re ready to go for most projects without rummaging through different sets.
Honestly, this bit exceeded my expectations. It’s versatile, durable, and makes CNC hole drilling much more straightforward.
The only downside? It’s a bit pricier than basic bits, but the performance and convenience definitely justify the cost.
What Are the Different Types of CNC Drilling Bits Available?
The different types of CNC drilling bits available include:
- Twist Drill Bits: These are the most common type of drill bits used in CNC machining. They feature a helical design that helps in efficient chip removal and are versatile enough to drill various materials like metal, plastic, and wood.
- Spade Drill Bits: Spade drill bits have a flat blade design that allows for wider holes to be drilled quickly. They are particularly effective for drilling holes in softer materials and can be used in applications where speed is more critical than precision.
- Step Drill Bits: Also known as a step bit, this type features multiple diameters along its length, allowing it to drill different sized holes without changing bits. They are especially useful for creating holes in thin materials, where the bit can gradually increase the diameter as needed.
- Counterbore Bits: These bits are designed to create a flat-bottomed hole that accommodates the head of a screw or bolt. They are essential for applications requiring a flush finish, ensuring that the fasteners sit below the surface of the material.
- Reamer Bits: Reamer bits are used for finishing holes to a precise diameter and achieving a smooth surface finish. They are typically used after drilling to enhance the accuracy and surface quality of the hole.
- Core Drill Bits: Core drill bits remove a cylindrical core of material, making them ideal for creating larger holes. These bits are commonly used in construction and masonry applications, where traditional bits might struggle with tougher materials.
- Diamond Drill Bits: These bits are embedded with diamond particles, making them suitable for drilling hard materials such as glass, ceramics, and stone. They provide a clean cut and are essential for precision work in delicate materials.
What Materials Should CNC Hole Drilling Bits Be Made From?
The best bits for CNC hole drilling can be made from various materials, each offering unique advantages based on the application.
- Cobalt Steel: Cobalt steel bits are known for their durability and heat resistance, making them ideal for drilling hard materials like stainless steel. The addition of cobalt enhances the bit’s strength, allowing it to maintain a sharper edge for longer periods and providing excellent wear resistance in demanding machining environments.
- Carbide: Carbide bits are extremely hard and can handle high-speed drilling with precision, making them a favorite for CNC machining. Their ability to withstand high temperatures and resist wear makes them suitable for drilling tough materials, including titanium and hardened steels, while maintaining excellent surface finishes.
- High-Speed Steel (HSS): HSS bits are versatile and affordable, suitable for a wide range of materials, including wood, plastic, and mild steel. While they may not last as long as carbide bits in high-performance applications, they are easier to sharpen, making them a practical choice for many CNC operations.
- Diamond-Coated: Diamond-coated bits are used for drilling very hard materials such as ceramics, glass, and composites. The diamond coating provides exceptional cutting performance and longevity, allowing for clean cuts and reduced friction, which is crucial for maintaining bit integrity during extended use.
- Tool Steel: Tool steel bits are designed for high-strength applications and can withstand significant wear and tear. They are often used in specialized drilling operations and can be heat-treated to enhance their hardness, making them suitable for tougher materials while still being cost-effective.
What Key Factors Must Be Considered When Selecting a CNC Bit?
When selecting the best bit for CNC hole drilling, several key factors must be considered to ensure efficiency and precision.
- Material Compatibility: The type of material being drilled significantly affects the choice of bit. Certain materials like aluminum, wood, or plastics require different bit designs and materials to achieve optimal results without damaging the workpiece.
- Bit Geometry: The shape and design of the bit, including its tip angle, flute design, and cutting edge, influence drilling performance. A bit with a sharper angle may provide cleaner cuts, while specific flute designs can help with chip removal and cooling during the drilling process.
- Diameter and Length: The size of the drill bit must be appropriate for the hole dimensions required for the project. A larger diameter bit can remove more material quickly, but may require more power, whereas a smaller diameter bit can achieve finer details.
- Coating: Many drill bits come with specialized coatings such as titanium or carbide that enhance performance and durability. These coatings can reduce friction, improve cutting efficiency, and extend the life of the bit when drilling through tough materials.
- Cutting Speed and Feed Rate: Understanding the optimal cutting speed and feed rate for the bit being used is crucial for achieving desired results. Different bits perform best at varying speeds, and using the wrong settings can lead to poor finishes and increased wear.
- Bit Type: There are various types of CNC drill bits, including twist drills, brad point bits, and spade bits, each suited to specific applications. Choosing the correct bit type ensures that the drilling task is completed efficiently and with the desired accuracy.
- Machine Compatibility: The CNC machine’s capabilities must align with the specifications of the drill bit, including maximum RPM and torque. Ensuring compatibility avoids operational issues and maximizes the performance of both the machine and the bit.
Which Brands Are Renowned for Quality CNC Hole Drilling Bits?
Some of the renowned brands for quality CNC hole drilling bits include:
- Amana Tool: Known for its precision and durability, Amana Tool offers a wide range of CNC bits that are designed for various materials and applications.
- Bits & Bits: This brand specializes in high-performance CNC bits, particularly for woodworking, providing excellent cutting quality and longevity.
- Freud: Freud is recognized for its advanced manufacturing techniques, producing CNC bits that deliver clean cuts and are suitable for both professional and DIY projects.
- Whiteside: Whiteside is celebrated for its American-made CNC bits, which are crafted with high-quality materials to ensure effective drilling and superior finish.
- Onsrud: Onsrud focuses on high-speed machining and offers CNC bits that excel in speed and efficiency, especially for industrial applications.
Amana Tool: This brand is well-respected in the CNC tooling industry for its extensive range of bits that cater to different materials, including wood, plastic, and metals. Their bits are designed using advanced technology, ensuring high precision and extended lifespan, making them a favorite among professionals.
Bits & Bits: Specializing in CNC bits for woodworking, Bits & Bits provides products that are known for their excellent performance. Their bits are engineered to reduce chipping and splintering, resulting in smoother finishes, which is vital for intricate designs and detailed work.
Freud: With a reputation for quality, Freud combines innovative designs with high-grade materials to produce CNC bits that offer reliable performance. Their bits are particularly noted for their ability to maintain sharpness over extended use, which helps in achieving consistent results across various projects.
Whiteside: An American manufacturer, Whiteside produces CNC bits that are highly regarded for their robust construction and reliable performance. The attention to detail in their manufacturing process ensures that users receive bits that not only drill effectively but also provide a clean finish.
Onsrud: Onsrud is a leader in the high-speed machining segment and offers CNC bits designed for the rigors of industrial use. Their products are engineered for efficiency, allowing users to achieve faster feed rates while maintaining the quality of the drilled holes, making them ideal for high-volume production environments.
What Industries Commonly Use CNC Hole Drilling Bits?
The industries that commonly use CNC hole drilling bits are diverse and integral to modern manufacturing and construction processes.
- Aerospace Industry: The aerospace sector utilizes CNC hole drilling bits for precision drilling in aircraft components, where accuracy and reliability are paramount. These bits can handle tough materials like titanium and aluminum alloys, ensuring that parts meet stringent safety standards and performance specifications.
- In the automotive industry, CNC hole drilling bits are essential for creating precise holes in engine blocks, chassis, and other components. The ability to drill multiple holes efficiently with high repeatability contributes to the mass production of vehicles while maintaining quality control.
- Manufacturing and Fabrication: CNC drilling bits are widely used in general manufacturing and metal fabrication for creating holes in various materials, including steel and plastics. These bits enhance productivity by enabling complex designs and reducing manual labor, allowing for faster turnaround times and more intricate projects.
- Construction Industry: The construction industry employs CNC hole drilling bits for tasks like drilling anchor holes in concrete and steel structures. The precision offered by CNC technology helps ensure that installations are secure and align correctly with structural requirements.
- Electronics Industry: In electronics, CNC hole drilling bits are used to create holes in circuit boards and other electronic components. This precision is crucial for ensuring proper connectivity and functionality in electronic devices, contributing to the overall quality of the finished products.
- Woodworking Industry: The woodworking industry has embraced CNC hole drilling for creating intricate designs and precise joinery. CNC bits enable woodworkers to automate the drilling process, resulting in consistent quality and a reduction in material waste.
- Medical Device Manufacturing: Precision is critical in medical device manufacturing, where CNC hole drilling bits are used to produce components with exact specifications. This ensures that devices function correctly and safely, which is vital in applications involving patient care.
How Can You Properly Maintain CNC Hole Drilling Bits?
Proper maintenance of CNC hole drilling bits is essential to ensure longevity and optimal performance.
- Regular Cleaning: Keeping your bits free from debris and buildup is crucial for maintaining cutting efficiency.
- Sharpening: Periodically sharpening your bits ensures precise drilling and reduces the risk of damage to the material.
- Proper Storage: Storing bits in a dry and organized manner can prevent physical damage and corrosion.
- Monitoring Tool Wear: Regularly inspecting bits for wear can help identify when they need to be replaced or serviced.
- Using Appropriate Speeds and Feeds: Matching the cutting speeds and feed rates to the material type can prolong the life of the bits.
Regular Cleaning: It’s vital to clean the bits after each use to remove any metal shavings, coolant residue, and other contaminants. A clean bit will perform better and produce cleaner holes, reducing the need for rework.
Sharpening: Bits can become dull over time, affecting their cutting capability. Using a proper sharpening tool or sending them to a professional service can restore their edge, ensuring they continue to perform effectively.
Proper Storage: Storing your CNC bits in a dedicated toolkit or case prevents them from being damaged or becoming dull through contact with other tools. Consider using protective caps or inserts to shield the cutting edges from moisture and dust.
Monitoring Tool Wear: Tools should be regularly inspected for signs of wear, such as chipping or blunting. Identifying these issues early can prevent more severe damage and maintain the precision of your drilling operations.
Using Appropriate Speeds and Feeds: Each material has specific speed and feed requirements that, when followed, can enhance the lifespan of your drilling bits. Operating outside of these parameters can lead to overheating and accelerated wear, reducing tool life significantly.
What Recent Innovations Are Influencing CNC Hole Drilling Technology?
Recent innovations significantly enhance CNC hole drilling technology, improving efficiency and precision.
- High-Speed Spindle Technology: Advances in spindle design allow for higher rotational speeds, which enables faster drilling without sacrificing quality. This technology reduces cycle times and improves overall productivity in CNC operations.
- Diamond-Coated Drill Bits: The introduction of diamond coatings on drill bits increases their durability and wear resistance. These bits maintain sharpness longer, allowing for cleaner holes and reduced need for frequent replacements, thus lowering operational costs.
- Adaptive Control Systems: Smart CNC machines equipped with adaptive control systems can adjust drilling parameters in real-time based on feedback from sensors. This innovation optimizes the drilling process, ensuring optimal feed rates and reducing the risk of tool breakage.
- Thermal Management Solutions: Enhanced cooling technologies, such as through-tool coolant systems or advanced coolant delivery methods, help maintain optimal drilling temperatures. This reduces thermal damage to both the workpiece and the drill bit, improving the quality of the holes produced.
- Modular Tooling Systems: New modular tooling options allow for quick changes between different bit sizes and types without requiring extensive downtime. This flexibility enables manufacturers to quickly adapt to varying production needs, enhancing overall workflow efficiency.
- 3D Printing of Drill Bits: The use of 3D printing to create custom drill bits tailored for specific applications is gaining traction. This innovation allows for complex geometries and designs that can optimize drilling performance for unique materials and hole requirements.