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Increasing feed can raise calculated material removal rate (MRR), but it does not automatically make a machining operation more productive. MRR describes how much material is removed per unit of time; useful productivity also depends on whether the cut can be sustained while meeting tool-life and part-quality requirements. The key question is not just “Why faster feed?” but whether the whole operation benefits from it.
What material removal rate measures
Material removal rate is the volume of material removed in a unit of time. It is a measure of cutting throughput, not a complete measure of production performance: it does not, by itself, account for tool life, part quality, or whether a machine and setup can sustain the chosen cutting conditions.
Turning MRR formula and units
For metric turning, Sandvik Coromant defines the formula as Q = vc × ap × fn, where Q is MRR in cm³/min, vc is cutting speed in m/min, ap is depth of cut in mm, and fn is feed per revolution in mm/r. See Sandvik Coromant’s metric turning formulas and definitions.
With cutting speed and depth of cut held constant, increasing feed per revolution increases the MRR calculated by this formula. That is the arithmetic result; it does not establish that the resulting cut is suitable for a particular machine, tool, work material, or part.
#1 Best Overall
- [DEBURRING TOOL KIT] Includes 1 BS1010 blades made of M2 High-Speed Steel (HSS). Each blade is tempered to HRC 62–64 for industrial-grade wear resistance. The M2 blades maintain a sharp cutting edge up to 80% longer than standard carbon steel when processing stainless steel, aluminum, and hard metals.
Why milling needs its own feed variables
The turning equation is specific to turning. Milling uses operation-specific terms such as feed per tooth, feed per revolution, cutting depth, and table feed. A turning feed-per-revolution value should not be copied into a milling calculation without first defining the relevant variables. Sandvik Coromant’s metric milling formulas and definitions covers those milling terms.
How geometry can change the feed relationship
Feed is not the only way to affect MRR, and its practical limits can depend on cutting geometry. In a manufacturer-specific technical session, Sandvik Coromant describes its PrimeTurning method, in which a smaller entering angle changes chip thickness and can allow higher feed while maintaining comparable chip thickness. This is an example tied to that method and its applications, not a universal rule that a smaller angle always permits a higher feed.
Rank #2
- High Quality: The Genmitsu end mills are made of ultra-fine 0.2μm tungsten carbide steel alloy that can keep continuous machining 800 minutes. Moreover, its Nano Blue Coating /Titanium Coating with high hardness and heat resistance enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality.
- 2-Flute Spiral Flat Nose & Ball Nose End Mills -- Shank Diameter: 3.175mm, Cutting Diameter: 3.175mm, Cutting Length: 17mm, Overall Length: 38mm.
- Two End Mill Sets -- Shank Diameter: 3.175mm, Cutting Diameter: 0.8 - 3.0mm (0.8/1.0/1.2/1.4/1.6/1.8/2.0/2.2/2.5/3.0mm), Cutting Length: 17mm, Overall Length: 38mm, with Nano blue and Titanium coating.
- Applicable Materials: Widely used in various materials including plastics, aluminum, circuit board, wood, as well as other precision parts processing.
- Wide Compatibility: The MC40A end mills are compatible with most desktop CNC machines, such as the Genmitsu 3018 Series, as well as other industrial CNC machines. Just make sure you select the correct-sized collet for your device
The same session discusses how selected cutting data affect both productivity and tool life. Its demonstrations apply to specific tools, materials, and setups; their numerical results should not be treated as general targets. See Sandvik Coromant’s PrimeTurning in ISO S knowledge session.
The Tool Desk
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When evaluating a feed change, compare like-for-like operations and materials, and decide what outcome matters. A higher removal rate may be useful if the cut remains suitable for the job; a rate alone does not tell you whether the overall production result improved.
Rank #3
- 360° Articulating Head – Swivels to reach edges, cross bores, and recessed areas that standard deburrers can't access. Perfect for complex 3D prints and machined parts
- 20-Piece M2 HSS Blade Kit – Includes 10x BS1010 for standard holes + 10x BK3010 specifically for small-diameter holes. Long-lasting sharpness for hundreds of uses
- CNC Blue Anodized Aluminum Handle – Lightweight, corrosion-resistant, with a comfortable non-slip grip. The striking blue finish adds style to your workshop
- Versatile Material Compatibility – Works flawlessly on 3D prints (PLA/ABS/Resin), aluminum, copper, PVC, soft metals, and plastics. A must-have for makers, machinists and 3D printing hobbyists
- Complete Kit with Storage Case – Includes durable case to keep all 20 blades organized and secure. Tool-free blade replacement with built-in chuck
- Material removed per unit time: Compare the MRR for the operation using consistently defined variables and units.
- Tool life: Consider how the changed cutting data affect tool life or material removed per cutting edge.
- Part requirements: Check whether the resulting part meets the required quality and surface finish.
- Machine and setup: Assess whether the machine, tooling, and setup can sustain the cut reliably.
The PrimeTurning session supports the connection between cutting data, productivity, and tool life in its specific examples. Part quality and machine/setup stability are additional considerations to assess in the application at hand, rather than results established by that session.
Quick Recap
Best Value
- EXTRA LARGE WOOD CNC ROUTER BIT: Shank: 1/4"; Cut Diameter:1-1/2"; Cut Length: 1/4"
- HIGH QUALITY CNC SURFACING ROUTER BIT: The sharp carbide tipped bit, solid hardened steel bodies with anti-kickback design. Build up with heat resistant Teflon coating which can reduce resin build-up for fast and easy cleaning. This CNC router bit is specifically designed and manufactured for the high quality demanded by woodworking industrial applications, BINSTAK router bit can withstand some heavy duty use and the test of time.
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- Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers. Such as woodworking engraving machine, trimming machine.
Rank #4
- [DEBURRING TOOL KIT] Includes 11 BS1010 blades made of M2 High-Speed Steel (HSS). Each blade is tempered to HRC 62–64 for industrial-grade wear resistance. These M2 blades maintain a sharp cutting edge up to 80% longer than standard carbon steel when processing stainless steel, aluminum, copper, brass, PVC, and other hard materials
- [RED ANODIZED CNC HANDLE] The 5.4 inch handle is precision-engineered from aluminum via CNC machining with a premium red anodized finish. Its knurled grip texture provides a stable, non-slip hold for improved handling during detailed edge work. The compact body has a slightly heavier feel for steadier control during deburring, pipe cleanup, and metal edge finishing
- [360° SWIVEL MECHANISM] Features a high-precision internal swivel mechanism that allows the blade to rotate effortlessly within the handle housing. This fluid internal movement helps the blade track curves, holes, edges, and inside diameters naturally for a cleaner finish. Includes a spring-loaded collar for secure retention and rapid blade changes
- [3D PRINTING FINISHING] Specifically calibrated for DIY model post-processing and 3D printing deburring tool use. It effectively cleans up brims, rafts, support marks, and sharp edges from PLA, PETG, ABS, and resin prints. The compact 5.4 inch aluminum handle allows controlled pressure for plastic and resin part finishing without gouging delicate surfaces
- [MULTI-MATERIAL VERSATILITY] Engineered for deburring tool for metal, pipe reamer, pipe deburring tool, and burr removal applications on stainless steel, copper pipe, brass, aluminum, PVC pipe, sheet metal, and freshly cut parts. The kit includes a storage case for 10 spare deburring tool blades, making it a practical choice for machinists, plumbers, makers, and 3D printing hobbyists
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