Custom PCD Lathe Inserts
Standard ISO inserts are great for general turning, but unique parts require unique solutions.
Sundi Custom PCD Inserts are engineered to bridge the gap between design complexity and manufacturing reality. Whether you need a complex form tool to machine a profile in a single pass, or a specific geometry to clear an interference point, our engineering team transforms your part drawing into a high-performance diamond tool.
Our Customization Capabilities
We specialize in Non-Standard PCD solutions for high-volume manufacturing.
Form & Profile Tools: Inserts ground to match the exact inverse shape of your workpiece (e.g., O-ring grooves with specific chamfers).
Special Angles & Radii: Need a 42° lead angle or a 0.05mm nose radius? We manufacture geometries that fall outside standard ISO charts.
Full-Face PCD: Large PCD segments for uninterrupted cutting on long surfaces.
Back-Turning Inserts: Specialized geometry for Swiss-style machining and back-turning operations.
From Concept to Chip: Our Process
We make ordering custom tools simple and reliable.
Requirement Analysis: Send us your component drawing or the specific feature you need to machine.
Tool Design: Sundi engineers create a CAD drawing of the proposed custom insert for your approval.
Precision Fabrication: We cut and grind the PCD blank using top-tier E6 materials and high-precision equipment.
Quality Verification: Every custom tool is inspected on Zoller measuring devices to ensure it matches the approved design 100%.
- High wear resistance
- Reduce the machine time
- Stable Performance
- Easy to use
Why Partner with Sundi for Custom Tooling?
Customization is about more than just grinding a different angle; it’s about optimizing your entire process.
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1. Solve Vibration & Chatter Issues
Standard inserts often struggle with rigidity in complex setups. We engineer custom substrate geometries and mass specifically to dampen vibration, ensuring smooth cuts even on thin-walled parts or long overhangs.
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2. Drop-In Performance Upgrade
Solve production bottlenecks without changing your entire setup. Our custom tools are engineered to fit your existing holders and programs while delivering superior cutting performance.
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3. Solve Interference & Clearance Issues
Standard holders often collide with part fixtures or tight internal bores. We design custom PCD tips on special substrates or modified blanks to access hard-to-reach features without risking collision.

Have a Difficult Part to Machine?
Standard catalogs can't solve every problem. Send us your blueprints today and let Sundi engineer a Custom PCD Solution that fits your exact needs.
FAQ
Most frequent questions and answers
A: Yes. We offer Reverse Engineering services. If you send us the physical part or the component blueprint, our engineers can calculate the necessary tool geometry and design the insert to produce that exact shape.
A: Unlike stock items, custom tools require design and fabrication time. Typically, our lead time is 2 to 3 weeks after drawing approval. We also offer expedited services for urgent production line down situations.
A: While the initial unit cost is higher than a standard ISO insert, the Cost Per Part is often lower. By combining operations (e.g., turning + chamfering in one pass) and extending tool life, a custom Sundi insert usually pays for itself through cycle time reduction and reduced scrap.




