13 best corner rounding end mills

Corner rounding end mills are cutting tools used in machining processes, particularly in milling applications. These end mills are designed to create rounded corners on workpieces, which can be essential for reducing stress concentrations, improving aesthetics, and ensuring the safety of the final product. Here are some key features and information about corner rounding end mills:

  1. Design: Corner rounding end mills have a cylindrical shape with a radius at the end. This radius corresponds to the desired corner radius on the workpiece. The shank of the end mill allows it to be mounted in a milling machine or CNC router.

  2. Materials: Corner rounding end mills are typically made from high-speed steel (HSS), carbide, or other advanced materials like cobalt or powdered metal. The choice of material depends on factors such as the workpiece material, cutting speed, and tool life requirements.

  3. Applications: These end mills are commonly used in various industries, including metalworking, woodworking, and plastic machining. They are especially useful for tasks like deburring, chamfering, and creating fillets in corners.

  4. Corner Radius: The selection of the appropriate corner radius is crucial. It should match the desired radius on the workpiece. Different end mills are available with various radius sizes to accommodate different applications.

  5. Cutting Parameters: The cutting speed, feed rate, and depth of cut are essential parameters to consider when using corner rounding end mills. Proper selection and adjustment of these parameters are critical for achieving the desired results and prolonging tool life.

  6. Tool Geometry: The geometry of the tool, including the helix angle, number of flutes, and flute design, can affect the performance of corner rounding end mills.Different geometries are suitable for different materials and cutting conditions.

  7. Coolant and Lubrication: Depending on the material being machined and the cutting speed, the use of cutting fluids or coolants may be necessary to dissipate heat and prolong the life of the tool.

  8. Safety Precautions: When using corner rounding end mills, operators should wear appropriate personal protective equipment (PPE), including safety glasses and hearing protection. Proper machine guarding and workpiece clamping are also crucial for safety.

  9. Tool Maintenance: Regular maintenance, such as sharpening or replacing worn-out end mills, is essential to ensure consistent and high-quality results.

  10. Cost Considerations: Corner rounding end mills come in various price ranges based on material, quality, and brand. It's important to balance cost with performance and longevity when selecting a tool.

In conclusion, corner rounding end mills are indispensable tools in machining and milling operations. They help create rounded corners on workpieces, which is essential for various applications across different industries. Proper tool selection, maintenance, and safety precautions are essential for achieving the best results while using these cutting tools.

Below you can find our editor's choice of the best corner rounding end mills on the market
  

Accusize Industrial Tools H.S.S. Corner Rounding End Mill Set Size from 1/16'' to 3/8'', 8 Pcs, 1011-0008

Accusize Industrial Tools

Based on 39 reviews Check latest price
  • Intended for use in milling rounded corners
  • Form-relieved type; can be sharpened repeatedly without changing the form.
  • Right hand cut. Formed radius cutter.
  • Suitable for a wide range of ferrous and nonferrous materials
  • 7/16" to 1-1/4"

User questions & answers

Question: R these 4 or better fluke
Answer: I have only used one tool so far. I used it on brass and it worked well making a smooth cut.
Question: Worth buying
Answer: And yes it is a step bit smaller to a quarter inch

Product features

HSS Corner Rounding End Mill Set Size from 1/16'' to 3/8'', 8 Pcs/Set, #1011-0008

  • Intended for use in milling rounded corners
  • Form-relieved type; can be sharpened repeatedly without changing the form.
  • Right hand cut. Formed radius cutter.
  • Suitable for a wide range of ferrous and nonferrous materials

Specification:

8 PC HSS 4 Flute 1/16-3/8'' Corner Rounding End Mill Set Shank Milling Cutter

Based on 6 reviews Check latest price

Product description



Set includes:

-1/16'' x 3/8''

-3/32'' x 3/8''

-1/8'' x 3/8''

-5/32'' x 1/2''

-3/16'' x 1/2''

-1/4'' x 1/2''

-5/16'' x 1/2''

-3/8'' x 1/2''

  • 8 PC HSS 4 flute 1/16-3/8'' corner rounding end mill set
  • Set includes:1/16"x3/8" ;3/32"x3/8" ;1/8"x3/8" ;5/32"x1/2";3/16"x1/2";1/4"x1/2";5/16"x1/2";3/8"x1/2"
  • Right hand cut ; Weld-on shank ; High speed steel
  • Wooden box INCLUDED ; Wooden box dimension: 3-3/8''L x 5-7/8''W x 4''H
  • Quantity: 1 ; Weight: 2.35 Lbs

Melin Tool BRMG Carbide Micro Corner Rounding End Mill, Double End, Uncoated (Bright) Finish, Non-Center Cutting, 0 Deg Helix, 2 Flutes, 1.5000" Overall Length, 0.047" Cutting Diameter, 0.125" Shank Diameter

Melin Tool Company

Based on 3 reviews Check latest price

Product description

Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. Can provide uniform finish on corners. Radius is form relieved.

  • Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • Round shanks allow use with a wide variety of toolholding systems
  • Can provide uniform finish on corners
  • Radius is form relieved

1/16" Corner Rounding End Mill, HSS

LittleMachineShop.com

Product description

Intended for use in rounding off sharp corners. Form-relieved type corner rounding end mills may be sharpened many times without changing the form of the radius. Non-center, right hand cutting with straight flutes and a weldon shank.

  • 1/16" Radius, 3/8" shank
  • 7/16" Head diameter (Mill)
  • 2-1/2" overall length
  • Form relieved for longer life
  • Right Hand Cut

Melin Tool-16100 RCMG Carbide Corner Rounding End Mill, Uncoated (Bright) Finish, Non-Center Cutting, 0 Deg Helix, 4 Flutes, 2.5000" Overall Length, 0.125" Cutting Diameter, 0.25" Shank Diameter

Melin Tool

Based on 1 reviews Check latest price

Product description

Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. Can provide uniform finish on corners. Radius is form relieved.

  • Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • Round shanks allow use with a wide variety of toolholding systems
  • Can provide uniform finish on corners
  • Radius is form relieved

Micro 100 CRE-187-060X 3 Flute Corner Rounding Double End Mill, AlTiN Coated, Solid Carbide Tool, 0.060" Minor Diameter, 3/16" Shank Diameter, 0.0600" Radius, 2" Overall Length

Micro 100

Product description

The MICRO 100 CRE-187-060X AlTiN - Aluminum Titanium Nitride - coated, solid carbide, 3 flute, corner rounding, double ended end mill. hard milling end mill. Designed and engineered with a formed radius for milling a specific radius in most ferrous and non-ferrous type materials. End mills can be utilized for both roughing and finishing. Manufactured with close tolerances to ensure ultimate precision and performance. AlTiN coatings are high performance and versatile. Has a higher breakdown temperature while maintaining high surface hardness at elevated temperatures. This type of coating also promotes tool life and allows for faster feeds and speeds. Excellent for dry machining applications. Applicable with oxidation temperatures up to 800° C or 1450° F. AlTiN coatings are best utilized on alloy steels, stainless steels, tool steels, nickel alloys and titanium. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed when it comes to solid carbide tooling.

Micro 100 CRE-125-020 3 Flute Corner Rounding Double End Mill, 0.060" Minor Diameter, 1/8" Shank Diameter, 0.0200" Radius, 2.000" Overall Length, Solid Carbide Tool

Micro 100

Based on 1 reviews Check latest price

Product description

The MICRO 100 CRE-125-020 uncoated, solid carbide, 3 flute, corner rounding, double ended end mill. hard milling end mill. Designed and engineered with a formed radius for milling a specific radius in most ferrous and non-ferrous type materials. End mills can be utilized for both roughing and finishing. Manufactured with close tolerances to ensure ultimate precision and performance. Each tool's cutting edge/tip has a distinctive mirror like finish that significantly adds to material removal while improving surface finishes. MICRO 100 Solid Carbide Tools feature more than just a micro-grain of excellent quality. Their substrate is in a class of its own resulting from exclusive treating processes that allow for vastly increased speed and feed rates. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed when it comes to solid carbide tooling.

Utoolmart HSSAL Corner Rounding End Mill Cutter 2 Flute with 1mm Radius, 8mm Shank 1 Pcs

Product description

Description:

1.Corner Rounding End Mill is intended for use in milling rounded corners.

2.Right hand cut. Formed radius cutter.

3.Form-relieved type. Can be sharpened repeatedly without changing the form.

4.Ideal for plastic, aluminum, copper, and steel milling.

Specification:

Product Name: Corner Rounding End Mill

Material: HSSAL

Overall Length: 68mm

Package Content: 1 x Corner Rounding End Mill

  • Use in milling rounded corners
  • Formed radius cutter. Right hand cut
  • Radius: R1; Shank Diameter: 8mm
  • Can be sharpened repeatedly without changing the form
  • Ideal for plastic, aluminum, copper, and steel milling

HHIP 5800-4050 5/32" x 1/2" HSS Corner Rounding End Mill

HHIP

Based on 21 reviews Check latest price

Product description

5/32 X 1/2" High Speed Steel Corner Rounding End Mill ~ Intended for use in milling rounded corners, etc. ~ Form-relieved type; can be sharpened many times without changing the form. ~ Right hand cut. ~ Formed radius cutter. ~ Radius is 5/32". ~ Mill diameter is 3/4". ~ Shank diameter is 1/2". ~ Overall length is 3".

  • Intended for use in milling rounded corners, etc
  • Form-relieved type; can be sharpened many times without changing the form
  • Right hand cut. Formed radius cutter
  • Radius is 5/32". Mill diameter is 3/4"
  • Shank diameter is 1/2". Overall length is 3"

User questions & answers

Question: What size is the hole in the end of the cutter? Need one with a 1/8" hole in center
Answer: Sorry for the confusion. Radius is 1/2". ~ Mill diameter is 7/8". ~ Shank diameter is 1/2". ~ OAL is 3"
Question: What is the radius of the corner formed by this cutter? The title seems to say 3/16" and the description says
Answer: .263"
Question: Does anyone have the minor diameter of the tip
Answer: Thanks for Rodney's quick reply. These corner rounding end mills are a 4 fluke radius cutter. Thank you.

Melin Tool RMG Carbide Corner Rounding End Mill, Uncoated (Bright) Finish, Non-Center Cutting, 0 Deg Helix, 3 Flutes, 2" Overall Length, 0.125" Cutting Diameter, 0.1875" Shank Diameter

Melin Tool

Based on 1 reviews Check latest price

Product description

Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of toolholding systems. Can provide uniform finish on corners. Radius is form relieved.

  • Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • Round shanks allow use with a wide variety of toolholding systems
  • Can provide uniform finish on corners
  • Radius is form relieved

HSS Corner Rounding End Mill 9/32'' (R7mm) 4 Flutes Straight Shank, Uncoated (Bright) Finish, Non-Center Cutting, for CNC Machining, Edge chamfering and deburring

LingGan

Product description

The Cutter Body Is Made Of High-Speed Steel Hss-Al Containing Aluminum. The Hardened Cutter Body Is More Wear-Resistant And Has A Longer Life. The Sharp Blade Cuts Smoothly During Use, And The Work Efficiency Is Greatly Improved.

  • Made Of High Quality HSS, Sturdy And Durable, Not Easy To Break, Long Service Life, And Is Usually Used For Assembly On Milling Machines.
  • Sharp Edge, The Cutting Efficiency Of HSS Edge Is Increased Several Times, The Cutting Material Is Smooth, And There Is No Burr And Burr.
  • Large Chip Flute, Smoother Cutting, Large-Capacity Chip Removal, Smooth And Stable Discharge, Reducing Tool Breakage.
  • Sharp And Precise Countersink. The Cutting Edge Is Hardened And Honed For Sharpness For Increased Durability.
  • Reducing The Number Of Tool Changes, Improve Machine Actuator Movement Rhythm, Save Mold Making Time, Is Suitable For Milling Copper, Aluminum, Steel, Cast Iron, Etc.

RedLine Tools - .1200 Double End Corner Rounding Carbide Endmill, Uncoated (Bright) 3 Flute .1875 Radius .5000 Shank Diameter, 3.0000 OAL - RCR681325

RedLine Tools

  • Uncoated
  • American Made Carbide
  • Photos may not be the exact representation of products.
  • .2500 Shank Diameter

SHARS 3/4X3/4 HSS Corner-Rounding END Mill 404-5822 P}

Shars

  • Shank Diameter: 3/4"
  • Number of Flutes: 4
  • Radius Corner Rounding: 3/4"
  • Minor Diameter: 2-1/4"
  • May be resharpened repeatedly without changing form

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