Back Corner Rounding End Mills are specialized tools designed for creating smooth, precise radii on the back side of machined features. Ideal for deburring, blending, and reverse contour finishing, these cutters are fully customizable based on your drawing and application. As a purpose-built internal corner rounding tool, it provides consistent back-edge finishing even in concealed or hard-to-reach geometries.
The Back Corner Rounding End Mill is a precision-engineered cutting tool designed to generate accurate radii on the back edge of internal features, pockets, and cavities. Developed specifically for reverse-edge machining without part reorientation, it minimizes setup time while delivering consistent, burr-free transitions on concealed or hard-to-reach surfaces. As an engineering-focused tooling provider, Aoshiji® Custom Tool supports customers with application-specific geometries tailored to print, ensuring reliable performance across aerospace, automotive, mold, die, and general CNC machining environments.
This tool is widely used in CNC machining setups requiring controlled backside radiusing, precision edge preparation, and reliable performance across varying materials and cavity depths. Its customized geometry ensures predictable results in both prototype development and high-volume manufacturing environments.
Back-edge deburring inside deep pockets and enclosed cavities
Generating controlled fillets on the rear side of pockets and machined cutouts
Internal blending and back-side finishing of mold cores and die features
Finishing tight-access or reverse-orientation areas in aerospace and automotive components
Multi-axis reverse contour and internal radius operations
Suitable for aluminum, steel, stainless steel, titanium, brass, copper, plastics, and composite materials
Precision-ground back-corner radius manufactured to customer specifications
Reverse-entry cutting geometry engineered for internal edge finishing and concealed-edge radiusing
Available in solid carbide, brazed PCD, or high-performance coated carbide
Optional through-coolant design for deep, enclosed, or poor-chip-evacuation features
Excellent runout control enabling consistent surface quality and stable tool life
Custom lengths, radii, shank diameters, coatings, and tolerances (±0.01 mm)
Eliminates manual deburring of concealed or inaccessible back edges
Improves surface finish and mechanical performance of internal features
Reduces setup time by eliminating part flipping or secondary machining steps
Enhances dimensional consistency in high-volume production environments
Fully customized for your CNC setup, material, and application requirements
| Parameter | Specification |
|---|---|
| Tool Type | Back Corner Rounding End Mill |
| Cutting Material | Solid Carbide, Coated Solid Carbide, Brazed Carbide, Brazed PCD, Brazed CBN, Solid HSS, Brazed HSS |
| Radius Range | Custom per drawing |
| Diameter Range | Custom (varies by shank and radius) |
| Shank Type | Cylindrical / Weldon / Custom |
| Coolant Supply | Optional through-coolant |
| Tolerance | ±0.01 mm (based on application) |
| Application Focus | Back-edge radiusing, deburring, internal finishing |
Custom radii for back-edge finishing and internal contour blending
Solid carbide, brazed PCD, or coated carbide construction options
Slim-profile or extended-length designs for accessing deep cavities
Optional coolant-through channels for improved internal chip evacuation
Custom shank dimensions compatible with all standard CNC toolholders
Coating options: TiAlN, AlTiN, DLC, or application-specific solutions
Geometry optimization based on 2D drawings or 3D CAD models
For drawings, customization details, or quotations:
[email protected]
Aoshiji® Custom Tool – Precision Engineering & Custom CNC Tooling Support
Related machining solutions and tools commonly used for similar corner profiling and form milling operations include:
PCD Bottom Radius Form Milling Cutter
PCD Double-Side Chamfer Cutter – Precision Chamfering & Slotting
