Custom Single Crystal (SCD/MCD) Diamond Inserts

Ultra-precision Single Crystal Diamond (SCD/MCD) inserts for mirror finishes on aluminum, copper, and plastics. Achieve exceptional sharpness and machining accuracy with custom-ground geometries manufactured according to your drawings and application requirements.

Single Crystal Diamond (SCD/MCD) Inserts for Ultra-Precision Machining

Achieve outstanding surface finishes and dimensional accuracy with custom-manufactured Single Crystal Diamond (SCD/MCD) inserts. As one of the highest-grade cutting solutions for ultra-precision machining, these inserts are ideal for applications requiring mirror-like surfaces (Ra < 0.01 μm) and sub-micron tolerances, especially for non-ferrous metals and polymers.

The Pinnacle of Cutting Tool Technology: Single Crystal Diamond

Single Crystal Diamond (SCD), also known as Monocrystalline Diamond (MCD), is a synthetically grown diamond material with an almost flawless crystal structure, offering unmatched performance for ultra-precision machining applications.

Atomically Sharp Cutting Edge
SCD inserts can be precision-ground to an extremely sharp, defect-free cutting edge with a nanometer-scale edge radius, enabling highly stable cutting with minimal cutting force, material deformation, and burr formation.
Exceptional Surface Finish Quality
Capable of producing mirror-like surface finishes (Ra < 0.01 μm) directly during machining, SCD tools often reduce or eliminate the need for secondary polishing or lapping processes.
Outstanding Hardness & Wear Resistance
With exceptional abrasion resistance on suitable materials, Single Crystal Diamond tools provide excellent edge retention and long service life in ultra-precision machining environments.
Excellent for Non-Ferrous & Polymer Materials
SCD performs exceptionally well when machining non-ferrous metals such as aluminum alloys, copper alloys, oxygen-free copper, brass, bronze, gold, and silver, as well as polymers including PMMA/acrylic and polycarbonate, along with certain soft composite materials.
Application Considerations
Although extremely hard, Single Crystal Diamond is more brittle than PCD or carbide materials. Optimal performance requires ultra-precision machine tools with high dynamic stability, minimal vibration, and carefully controlled machining parameters. SCD is generally not recommended for ferrous metals due to chemical affinity or for very hard ceramics because of brittleness concerns.

Customized Insert Geometry to Your Exact Requirements

We specialize in manufacturing Single Crystal Diamond (SCD/MCD) inserts with precisely controlled geometries tailored to your specific machining application and tool holder design. Based on your detailed drawings and technical requirements, we can produce inserts featuring:

Micro-Precision Dimensions & Tight Tolerances
Our ultra-precision manufacturing capability enables exceptional accuracy on critical geometric features. For example, we can achieve highly controlled dimensions such as insert width, cutting edge arc radius, center height, and body thickness with micron-level precision, depending on the insert design and application requirements.
Complex Cutting Edge Geometries
We can manufacture highly customized cutting edge profiles, including specific rake angles, clearance angles, edge radii, facet designs, and special edge configurations optimized for turning, milling, boring, fly-cutting, grooving, and scribing applications.
Controlled Crystal Orientation
The crystallographic orientation of the diamond can be carefully controlled relative to the cutting edge direction to maximize wear resistance, edge stability, and machining performance for specific materials and cutting conditions.

Primary Application Areas for SCD Inserts

Single Crystal Diamond (SCD/MCD) inserts are widely used in ultra-precision machining applications where exceptional surface finish, dimensional accuracy, and edge quality are critical.

Optical Industry
Precision machining of molds and inserts for optical components such as plastic lenses, Fresnel lenses, light guides, reflectors, and optical polymers requiring mirror-quality surfaces.
Ultra-Precision Molds & Dies
Manufacturing high-gloss mold cavities and precision dies for injection molding, reflective components, and ultra-fine surface replication applications.
3C Electronics Manufacturing
Creating premium “diamond-cut” decorative finishes on aluminum, magnesium alloys, and plastic housings used in smartphones, laptops, wearable devices, and consumer electronics.
Acrylic & Polymer Processing
Producing optically clear and ultra-smooth surfaces on PMMA, acrylic, polycarbonate, and other engineering plastics used for displays, lighting panels, medical parts, and decorative products.
Medical Device Manufacturing
Precision machining of non-ferrous metal and polymer medical components requiring tight tolerances, superior surface quality, and reliable machining consistency.
Jewelry & Watchmaking
Achieving flawless, high-luster finishes on precious metals such as gold, silver, platinum, and other decorative materials used in luxury products and precision accessories.

Collaborative Development & Custom Manufacturing

Your Requirements Drive the Design
To develop the ideal Single Crystal Diamond (SCD/MCD) insert for your application, we recommend providing detailed drawings, workpiece material information, machining operations, target surface finish (Ra), tolerance requirements, and preferred cutting parameters whenever possible.
Precision Manufacturing Backed by Expertise
Based on your technical requirements, our engineering team manufactures custom SCD inserts with outstanding precision, edge quality, and machining performance. Each insert is carefully optimized according to your actual processing conditions, machining allowances, and application goals.
Designed for Your Tooling System
Our custom SCD inserts can be manufactured for integration into your existing turning tools, milling cutters, boring bars, fly-cutting tools, grooving tools, and other ultra-precision tool holder systems.

Contact our ultra-precision machining specialists today to discuss your application requirements and explore the possibilities of custom Single Crystal Diamond inserts for your precision manufacturing projects.