Wednesday, February 22, 2017

Six Tips for Effective Optimized Roughing

By Jay Ball - Product Manager, Solid Carbide End Mills

Optimized roughing can be highly effective for machining part features such as pockets with challenging corners as well as any straight walls that require long axial depths of cuts. In fact, this strategy enables you to machine pockets three to four times faster than conventional methods while also dramatically extending the life of your tools. For example, under the right conditions, optimized roughing allows cutting tools to last up to 8 hours when machining titanium, as opposed to 30 minutes of tool life using conventional cutting methods.

However, achieving the best possible results with today’s optimized roughing strategy does require adhering to a few specific guidelines.

1. Adjust radial stepovers
An optimized roughing strategy typically employs multi-flute tools with anywhere from five to nine flutes. As the number of flutes increases, the size of the stepover must decrease to maintain surface finish at faster feed rates as well as accommodate for the decrease in chip spacing. If the stepover is too large, feed rates need to be lowered, which generates more heat due to the larger amount of metal removed in each pass. By decreasing the size of the stepover, you can use faster cutting speeds. More passes are necessary to remove the same amount of material, but the metal removal rates are still higher than at slower speeds due to the increased feed rates. This is the main reason optimized roughing makes tools last longer and heightens thermal stability.

2. Use strong, secure toolholders and fixturing
High-precision holders are crucial in optimized roughing. The holder needs similar specifications to those for hard milling, including less than 0.0004" run out. A precise holder ensures the accuracy of the process, whereas a less secure holder will cause undesirable levels of vibration at optimized roughing’s high feed rates. For the same reason, it’s important to use strong workholding fixtures as well.

3. Make sure your machine is capable of performing optimized roughing
Machine tools used for optimized roughing not only need to be able to achieve extremely high feed rates, but they also need to be able process thousands of lines of code in a matter of seconds. This requires advanced look-ahead capabilities and processing systems found in newer machine tools. Rigidity throughout the machine tool from the spindle bearings all the way through to the ball screws ensures smooth cutting, consistent tool life and unsurpassed part quality.

4. Choose a suitable programming method
It is nearly impossible to program an optimized roughing strategy manually. Many companies provide state-of-the-art programming software, but careful consideration must be made when choosing the right software or software add on. Not all software is created equal. For example, a programing software designed only for complex 3D high speed milling may not be able to perform the complex radial moves inside of tight corners to maintain a consistent angle of engagement, which is one of many keys to successful optimized roughing strategies.

5. Select the right depth of cut
We recommend a cutting depth of 2xD for optimized roughing and taking the full length of the cut in one pass. Smaller radial stepovers make such depths of the cut possible. A larger stepover would increase the amount of heat in the cut, which in-turn, will have a negative effect on tool life and performance, so rpm and feed rates must be reduced. However, a cut that is too deep, over 3xD for instance, creates cutting pressures greater than the tool can bear and causes deflection. Some manufactures add chip splitters in these cases to help reduce cutting pressure which, in-turn, reduces cutter deflection and also helps with chip control.

6. Follow recommended cutting parameters from tooling manufacturers
We frequently see customers encounter problems when they rely on the default cutting data recommendations from programming software suppliers instead of those provided by cutting tool suppliers. Tool manufacturers develop specific recommended cutting parameters after meticulous research and years of firsthand experience. They optimize cutting data for the tool’s design, specifications and for specific material groups.

Optimized roughing is an excellent strategy for achieving quality parts and extending tool life, but requires use of the right equipment and cutting parameters. If you are having problems implementing the approach or want to learn more about how to use the strategy to process a part, contact us.

About the Author
Jay has been with Seco for more than 10 years. As a key member of the product management team, he is responsible for Seco’s solid carbide end mill products in North America. He works closely with global R&D on new innovations to ensure they meet the necessary market requirements. He also provides technical support for high-speed hard milling and micro milling operations, including CAD file review, tooling selections and programming recommendations.

Wednesday, February 15, 2017

Three Reasons to Choose Reaming Over Boring

By Manfred Lenz, Product Manager - Drilling

Holemaking is one of the most common metalworking operations. It’s a critical operation that requires matching the right process with each job to maximize profitability. Boring is often considered the go-to method, but more manufacturers are finding reaming to be a better option in some high volume or high-cost part applications. Here’s why:

1.  Reaming is more consistent.
For some manufacturers – especially those working in exotic materials – consistency is everything. After they have performed numerous operations on an expensive part, the last thing they want is to ruin it on the very last process.

Boring tools and reamers have completely different designs. A boring head is an adjustable tool that consists of a cartridge with an insert. The advantage of this design is that it offers flexibility to use one tool in multiple operations or on different sized parts. This flexibility is often perceived to make the tool more economical, but because the inserts wear – which then leads to inconsistent holes sizes – this type of system can actually result in higher end costs.

A reamer, on the other hand, is a solid tool with a set dimension designed to deliver single digit RAs and micro finishes. It has a lead angle, a diameter, back taper, and a wiper area. On non-adjustable reamers, nothing on a reamer is moving, so it remains consistent and delivers the same hole size throughout the life of the tool. It also does not require replacement of inserts or adjusting by the operator to bring it back to size – which is subject to human error.


Reamers also have an extremely predictive tool life. A machinist using an air gauge to measure parts throughout the manufacturing process can see when it’s nearing time to change the tool and put in a new one before a problem arises. Then, once the reamer is changed, the new reamer will produce a good hole on the very first part.


One of our automotive customers that runs 15 million of the same part per year had been using a boring tool to produce large holes and was frustrated with inconsistency. Holes that were undersized required additional handling to finish bore or hone to size. Holes that were oversized got scrapped. By switching to a reamer, the customer experienced more consistency and eliminated the need for secondary operations and waste.

2.  Reaming reduces scrap.
Reducing scrap becomes especially important when working with very expensive materials. In the aerospace industry, for example, manufacturers often produce lower quantities of parts out of Inconel®, titanium and other high-cost materials. For these manufacturers, using a non-adjustable reaming tool and changing it out more frequently can provide consistent hole sizes throughout the life of the tool and significantly lower scrap ratios.

3.  Reaming can save time.
Unlike a finish boring head, which usually has just one tooth, a reamer will have up to 10 teeth depending on its size. Multiple teeth enable users to use much faster feed rates, and therefore increase productivity over machining with a single tooth tool.

Reaming is also a good choice for materials that cannot withstand high levels of heat and therefore require slower machining and longer cycle times. When it takes four or six times to machine a part out of an exotic as a normal piece of steel, the cost in the part increases exponentially. With that much time invested, it’s important to have a fool proof method in place when the final operation of finishing a hole rolls around.


The bottom line is that reaming offers the big advantage of consistency. Whether you are producing high volumes of parts or small batches of high cost parts, reaming can ensure the process stability and repeatability you need. So, if you have a boring operation that might make sense to switch to reaming, contact us. We can help you decide which process will make you most productive and profitable.

About the Author
Manfred has been with Seco for more than 16 years. In his current role as drilling product manager, he is responsible for every aspect of the company’s drilling products in North America. He works closely with global R&D on new innovations to ensure they meet the market’s tough manufacturing demands. Manfred also supports the Seco sales force by providing them with technical information and cost saving solutions that bring value to customers. In his spare time, he enjoys boating, bowling and golfing.

Thursday, March 24, 2016

What is Tribology and Why Should You Care?

By Patrick de Vos, Corporate Technical Education Manager, Seco Tools AB

Tribology is a relatively new area of metalcutting load analysis. It studies how surfaces in contact with each other, such as the cut chip and tool, interact at certain temperatures and pressures. Its main focus is e.g. learning what causes the negative phenomenon of built-up edge and what can be done to minimize the problem.

Tribological research has determined that the cutting process does not simply involve a single shearing event and subsequent disconnection of chip and tool. In fact, secondary and tertiary connections and disconnections also occur. The chip shears away, adheres to the rake face and then shears away again before finally sliding off the tool. The main wear mechanism is repeated shearing, not friction.

Built-up edge occurs when thin layers of the workpiece material adhere to and build-up on the tool rake face. If a significant amount of material accumulates on the tool, it can change the profile of the cutting edge. The built-up material can also break off and damage the edge or be deposited on to the workpiece. Regardless, edge buildup makes the cutting process unpredictable and results in poor surface finishes and a need to change tools frequently.

We know that the prime factors that promote edge buildup are high ductility, high adhesion tendencies, abrasiveness and the high pressure and temperatures that are generated when machining tough alloys that have poor thermal conductivity. The possibility of built-up edge formation is much greater in newer workpiece materials such as low carbon steels, aluminum, and the family of aerospace and energy industry materials encompassing titaniums, nickel-based alloys and heat-resistant metals.

Tooling engineers are applying the findings of tribological research in the development of machining processes and tools that will meet the higher demands from these new materials. On the process side, we know that minimizing adherence and the chances for forming built-up edge involves reducing the contact time between the chip and the rake face.

The most straightforward solution is to increase the cutting speed and apply a sharper tool. Faster cutting speeds reduce the time the tool and workpiece material are in contact with each other. The resulting higher process temperatures can also reduce the strength of any edge buildup or eliminate it entirely. The sharper tool has a higher primary rake angle that forces the chip to move more quickly. Other tool geometry choices, such as use of positive rake tools, can help direct cut material away from the workpiece.

We have also used tribology research findings to understand the role tool coatings play in minimizing edge buildup. For example, the newest generation of Seco’s CVD aluminium-oxide Duratomic® coating is based on tribological principles. Development engineers manipulated coating components in response to expanded knowledge of the interactions between the chips and the cutting tool.

Another example of Seco coatings aimed at controlling built-up edge is the new silver PVD uni-coating developed for MS2050 milling inserts. The coating has high heat resistance capabilities and also practically eliminates the occurrence of built-up edge when cutting sticky materials such as titanium. With the absence of built-up edge, the inserts last about 50 percent longer and run at much higher cutting parameters as compared with existing tools.

Tool engineers are also using tribology to research ways to turn edge buildup from a liability into a positive contributor to machining productivity. For example, in some cases, a thin layer of workpiece material on the surface of the cutting tool actually slows the progress of wear. The key is to find a perfect thickness of this tool protection layer that does not affect tool geometry and also does not separate from the tool surface.

While tribology may not be a topic you think about everyday, it is offering an important new perspective for developers of cutting tools and machining processes. It’s giving us another tool to use as we respond to and solve increasingly tougher machining challenges in innovative ways.

If you have questions about tribology, please contact me.

About the Author
Based in The Netherlands, Patrick is the corporate technical education manager for Seco Tools AB with global responsibilities for the technical education activities that help train Seco employees and customers worldwide. He led the creation of the Seco Technical Education Program (STEP) and since its launch more than 200,000 people  worldwide have participated in the program. He has been with the Seco organization for more than 30 years, and during that time he has trained more than 70,000 people in   over 57 countries. He is also the author of the books “Metal Cutting, theories in practice”, “Tool Deterioration, Best Practices” and “Applied Metal Cutting Physics, Best Practices”.

Monday, February 8, 2016

Don’t Let Mechanical Loads Weigh Down Your Milling Process

By Patrick de Vos, Corporate Technical Education Manager, Seco Tools AB

When planning a milling application, there are several factors you must consider for optimum results. First and foremost, you want to have the right cutting tool for the job. But before diving too deep into a tooling supplier catalog, it’s important to understand the variables that impact cutting tool performance, with mechanical loads being one of them.

A mechanical load, not to be confused with cutting force, can be thought of in terms of pressure (force per unit of surface area). This pressure has significant influence on tool life and failure. Consider this: a high cutting force spread over a large tool area produces a relatively insignificant load, while a low cutting force concentrated in a small section of the tool can create a problematic load.

Milling exposes multiple cutting edges to continuously changing loads that go from small to large and back again. And, no matter what milling cutter type you use, its cutting edges will repeatedly enter and exit the workpiece material. Loads on the milling teeth will go from zero before entry to peak values in the cut and back to zero at exit.

Therefore, you want to moderate these intermittent loads so you can achieve the best possible tool life, reliability and productivity in your application. Elements such as cutter positioning, entry and exit strategies and chip thickness are key to controlling mechanical loads and ensuring your success.

Cutter Positioning
When approaching a workpiece, you must consider what milling direction will best meet your goals. In conventional “up” milling, the cutter rotates against the direction of the workpiece feed, while climb “down” milling moves in the same direction as the feed.


Whether you go “up” or “down,” you’ll want to position the cutter to one side or the other of the workpiece centerline. Central positioning mixes the forces of conventional and climb milling, which can result in unstable machining and vibration.


Entry and Exit Strategies
The way the cutter and its cutting edges enter the workpiece largely determine mechanical loads in milling. More times than not climb milling will offer the best point of entry over conventional milling, but there are pros and cons to both.
  • Climb milling pros: Full-thickness entry into the workpiece allows for proper heat transfer into the chips, protecting both the part and the tool. Chips flow behind the cutter, minimizing recuts and yielding better part surface finishes.
  • Climb milling cons: Full-thickness entry into the workpiece can subject the tool to heavy mechanical loads (which is not a problem for most cutting tool materials). Face milling via the climb method creates a downward force that can cause backlash on older manual machines.
  • Conventional milling pros: Gradual entry into the workpiece protects brittle, super hard cutting tools from damage when machining rough-surfaced or thin-walled materials. It also handles heavy cuts on less stable machines.
  • Conventional milling cons: Shallow-thickness entry into the workpiece creates excessive friction and heat that can have detrimental effects on a tool. Chips drop in front of the cutter, increasing recuts and lowering part surface finish quality.
Furthermore, how your cutter exits the workpiece is just as important as how it enters. If your cutter’s exit is too sudden or uneven, the cutting edges will chip or break. When handled properly, however, you stand to benefit from up to 10 times more tool life. The exit angle, defined as the angle between the milling cutter radius line and the exit point of the cutting edge, should be the primary focus of your exit strategy. Keep in mind your exit angle can be negative (above the cutter radius line) or positive (below the radius line).

Chip Thickness
Chip thickness is the thickness of the non-deformed chip at the right angles of the cutting edge, and it’s influenced by the radial engagement, edge preparation of the insert and feed per tooth.

When chips are too thick, they tend to generate heavy loads that can chip or break a tool’s cutting edges. When chips are too thin, cutting takes place on a smaller portion of the cutting edge, creating friction and increased heat that results in rapid tool wear.

Cutting tool manufacturers typically have the average chip thickness data for their milling products, so be sure to ask your supplier for this important information. When the average chip thickness data for your cutting tool is applied and maintained, you benefit from maximum tool life and productivity.

Milling cutters have significantly evolved over the years, allowing us to achieve levels of productivity and profitability never before possible. However, many fail to take full advantage of this technical progress. Don’t be one of them. By taking the time to understand the variables that influence cutting tool performance and planning out a proper milling strategy, you’ll have it made.

Metal cutting is definitely a complex process, so any time you have questions or require applications advice, please don’t hesitate to contact our technical support team. Also, be on the lookout for future posts on thermal and tribological loads in milling.

Read the published Seco technical article “Controlling Mechanical Loads In Milling.”

About the Author
Based in The Netherlands, Patrick is the corporate technical education manager for Seco Tools AB with global responsibilities for the technical education activities that help train Seco employees and customers worldwide. He led the creation of the Seco Technical Education Program (STEP) and since its launch more than 200,000 people  worldwide have participated in the program. He has been with the Seco organization for more than 30 years, and during that time he has trained more than 70,000 people in   over 57 countries. He is also the author of the books “Metal Cutting, theories in practice”, “Tool Deterioration, Best Practices” and “Applied Metal Cutting Physics, Best Practices”.

Thursday, January 28, 2016

How to Best Deal With (Part) Rejection

By Todd Miller, Manager of Product Marketing

No one likes rejection, especially in the world of parts production. Manufacturers running critical applications know there’s nothing worse than having to scrap expensive, time-consuming components because of burrs or unacceptable edge conditions. Sound familiar? Then it might be time for you to tackle these unsightly manufacturing blemishes differently.

Mechanized Edge Profiling, or MEP, could be your answer, especially if you’re deburring components using hand grinders or other manual processes. Because, even when performed by skilled craftsmen, manual techniques are slow and lack the required process consistency from part to part.

MEP, however, is a controlled strategy involving precision engineered tools, guided by a machine tool’s CAM program, to remove burrs and sharp edges quickly and consistently. It’s also a documentable method that can increase your repeatability and reduce your setup and part handling expenses.

Before implementing MEP, it’s important to make sure you have the right tools for the job. When machining non-rotating components, such as aircraft engine casings, it’s best to use solid-carbide chamfering end mills and edge-break tooling. However, when profiling edges on contouring components, ball nose and lollipop-style tools are your best bet.

Custom MEP tooling is necessary when cutting critical rotating parts that require perfect surfaces, such as aircraft engine fans. These special tools have specific radii, chamfers and angles that are essential to machining flawless, lab-certified edge profiles. The most sophisticated deburring tools have edge designs that produce a chamfer with a radiused edge preceded by lead-in and lead-out angles to prevent formation of secondary burrs.

When putting MEP into action, you should use it as a portion of the actual part feature machining operation for maximum accuracy, consistency and productivity. Deburring should occur after all machining operations are completed. The CAM program directs the MEP tools to deburr all the holes and break sharp edges in sequence. Some MEP tools can be used to deburr a variety of holes, and some profiling tools can be applied on three or four different locations or features, such as the bottom of a hole as well as the bottom of a scallop contour.

To ensure that the edge profiling takes place in the correct location and with the proper amount, your part’s hole or feature must be defined or measured before the MEP operation begins. When part tolerances are very tight, the location of the part surface should be well defined and in-process measurement may be unnecessary. However, if the location is in question, measurement will be necessary after initial machining to determine the location of the edge or feature to be profiled.

In addition, the tool itself must be measured and located to ensure that it will profile the part correctly. Because the tool radii are so small — and for practical purposes, unmeasurable — the tool length is specified in the CAM program. You can confirm the tool length away from the machine with a presetter or on the machine via a laser or touch probe. Feed rates are calculated relative to the measured dimensions of the part features and the tool.

Overall, you should consider the deburring or chamfering process as a finishing pass, with your primary focus on quality. Productivity is always important, but especially in the case of expensive components, pushing the tool to maximize output can have negative, and costly, repercussions. Consistency, reliability and elimination of scrap parts are paramount because no one likes the feeling of rejection.

If you have questions about MEP, please don’t hesitate to contact me or our technical support team. You might also want to check out the published Seco technical article “How MEP Takes the Edge Off Parts Manufacturing.”

About the Author
Todd oversees the product marketing team at Seco Tools LLC. and works with the company’s sales department to further enhance the customer experience. He and his team also support product introductions while working globally on new product testing to ensure customers gain access to the industry’s most advanced tooling as quickly as possible. In his spare time, Todd likes to go bowling as well as cheer on the University of Michigan football team.

Thursday, January 14, 2016

Take the Load Off Your Turning Tools

By Chad Miller, Product Manager – Turning and Advanced Materials

Do you find yourself frequently frustrated by premature tool deterioration or failure during turning operations? Understanding the four basic types of machining loads and how each affects your cutting tools can help you achieve slow, predictable tool deterioration as well as increase productivity and profitability.


The four load types are: mechanical, thermal, chemical, and tribological, and each one contributes to the wear and failure of your cutting tool. You’ll find these loads do not act independently, but rather interact and influence the sum of their effects on tool deterioration.
  • Mechanical loads in turning are steady; however, any interrupted cuts during the process produces impact loads that can chip or break the tool. 
  • Thermal loads occur when workpiece deformation generates heat up to 1,650 degrees Fahrenheit, causing tool deformation and blunting. 
  • Chemical loads occur when heat and pressure combine between the cutting and workpiece materials, producing tool wear in the form of diffusion or cratering.
  • Tribological loads happen when there is friction between the tool and chip, creating abrasion and erosion-type wear.
You can, however, mitigate the negative impact these loads have on your tools using two strategies.

Strategy 1:


Manipulating your cutting parameters can influence the level of load impact on your tool. Keep in mind, however, depth of cut, feed and speed all have differing effects on machining loads, so you should consider the following:
  • Doubling the depth of cut doubles the cutting force but also doubles the length of the cutting edge in cut. This results in the load remaining the same per unit of cutting edge length.
  • Increasing feed rate increases cutting forces, but to a lesser, non-linear degree. Because the greater feed increases chip thickness, not the length of the tool in the cut, loads are seriously increased on the cutting edge.
  • When increasing cutting speed, forces generally remain the same, but power requirements rise.
  • Cutting forces rise at lower cutting speeds and decrease at higher cutting speeds. Watch closely for a built-up edge, which may indicate inappropriate cutting speed.
  • Too high of cutting speeds can reduce the reliability of a process through uncontrolled chip formation, extreme tool wear and vibration that can make a tool chip or fracture.
  • Higher feeds and depths of cut combined with low or moderate cutting speeds offer the best potential for operational security and reliability. Higher cutting speeds, if depth of cut and feed are sufficiently low to limit cutting forces, can provide greater productivity.

Strategy 2:


The basic size and shape of a tool determines its strength and capabilities. Often times, tool geometries are engineered with a specific application or workpiece material in mind. So, it's critical to have the best tool for the job right from the start. Here are a few things to keep in mind when selecting tools:
  • A large, strong insert enables use of highly productive feeds and depths of cut because cutting forces acting on a large insert will result in lighter loads than the same forces would create on a smaller insert.
  • A round insert shape is the strongest, and a 90-degree corner of a square insert is stronger than a 35-degree corner of a diamond insert. However, a round insert cannot cut the same variety of part profiles as a 35-degree tool. There is a tradeoff of strength for flexibility of application.
  • Generally, the best tool for cutting steel, where toughness is required, has a honed edge. The best tool for cutting stainless steel, which tends to be gummy, has a sharp edge.
  • Very sharp cutting edges may not necessarily provide the best surface finish. The best results often are obtained after an edge has run for a period of time.
Tool deterioration during machining is inevitable, but as you can see there are ways to slow the process and better predict when a tool will fail. Metal cutting is definitely a complex process, so any time you have questions or require applications advice, please don’t hesitate to contact me or our technical support team.

Read the published Seco technical article “Mechanical Loads and Cutting Geometries in Turning Operations.”

About the Author
Chad manages Seco's turning and advanced materials product lines, including all CBN and PCD products. When he's not helping customers implement advanced metal cutting solutions, you can find him training for and running 5K, 10K and 1/2 marathon races and triathlons.

Tuesday, December 15, 2015

High-Speed Hard Milling Tips for Successful Mold Production

By Jay Ball, Product Manager – Solid Carbide Endmills, Seco Tools LLC

If your mold shop would like to reduce or eliminate roughing of mold cavities pre-heat-treat and go straight to post-heat-treat roughing and finishing, you might want to consider high-speed hard milling. Why? Because, when applied correctly, the process, which involves light depths of cut and accelerated feed rates, can boost your productivity and reduce your setup costs.


With hard milling, depending on your application, you could drill holes and water lines in a block, perform heat treatment and then apply high-speed strategies to rough and finish in one setup. But, to be successful, there are several factors to consider, including the 6 mentioned below.

1. Think in Terms of Machinability

Typical hardened mold steels fall into the 48-65 HRC hardness range, but Rockwell numbers are only half of the equation in terms of real-world machinability. D2 tool steel, for example, hardens to about 60-62 HRC, but machines more like 62-65 HRC material due to its 11-13% chromium content. So, when machining multi-constituent alloys, it’s best to apply the recommended machining parameters for hard materials set forth by your cutting tool supplier.  

2. Maintain Constant Chip Load

Maintaining a constant chip load on a tool’s cutting edge is important, otherwise it will wear out prematurely, chip or break. Certain situations, such as machining 3D contours into a mold, make chip load management especially challenging. There are, however, steps you can take to simplify the process, including manually reducing your rpm/feed rate via override controls, or backing the rpm and feed rate down using the combined efforts of your machine’s CAM program and CNC.

3. Minimize Tool Run Out

On average, tool run-out greater than 0.0004" can cut your tool life in half. Therefore, it’s important to do everything you can to minimize it, especially when working with smaller tools. One way to reduce runout is by using high-precision holders such as shrink-fit, hydraulic, and milling chucks in your operations.

4. Reduce Finishing Stock

Be sure to remove as much part stock as you can during the roughing process. If you’re working with cutters that are larger than 1/8" in diameter, it’s best to leave about 1 percent of the cutter diameter for finishing. Smaller tools, however, determining a sufficient amount of stock for finishing may be a case of “feel,” or trial and error. 

5. Beat the Heat
Extreme heat has a significant impact on tool life, especially when processing materials harder than 48 HRC. When working with these materials, it’s better to use an air blast or oil/air mist instead of coolant to avoid thermal shock.

6. Apply the Right Tool

When processing molds with tight tolerances, you want to make sure you have the right cutting tool for the job. Because milling hard materials generates a significant amount of heat, it’s best to use tools with a high thermal-barrier and abrasive resistant coatings such as AlTiN. CBN tools are great for premier finishing applications, while inserted end mills prove highly effective in roughing and some finishing operations.  

While high-speed hard milling is a great alternative to lengthy rough milling processes, careful consideration of your entire machining system is critical to successful application. Understanding these 6 factors is a good place to start, but you should also consult with your cutting tool supplier to gain the best possible results.




About the Author
Jay has been with Seco for more than 10 years. As a key member of the product management team, he is responsible for Seco’s solid carbide end mill products in North America. He works closely with global R&D on new innovations to ensure they meet the necessary market requirements. He also provides technical support for high-speed hard milling and micro milling operations, including CAD file review, tooling selections and programming recommendations.