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Leadpoint manufactures custom cores, cavities, threaded inserts, slides, lifters, ejector components, carbide wear parts, and other non-standard mold components. CNC machining, EDM, wire EDM, precision grinding, and dimensional inspection are combined according to each part’s geometry, hardness, fit, and service-life requirements.
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Custom components from drawings or approved samples -
Hardened steel and tungsten carbide capability
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CNC, EDM, wire EDM and precision grinding
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Inspection for critical dimensions and interchangeability
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Supported by Advanced Grinding & Testing Equipment
24/7 Technical Support & Full Inspection Reports
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Drawing-Based Manufacturing
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Small Batch & Repeat Orders
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NDA Available
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Inspection Reports Available
Customs Plastic Injection Mold Services
Custom core and cavity inserts for injection, die-casting, and forming applications, manufactured according to part geometry, sealing areas, surface requirements, and mating conditions.
Threaded Cores & Inserts Internal and external threaded components, unscrewing cores, thread-forming inserts, and precision round inserts with attention to pitch, runout, surface condition, and wear resistance.
Sliding components, angle pins, guide elements, locking blocks, wear plates, and replaceable inserts designed for stable movement and serviceability.
Tungsten carbide punches, bushings, inserts, and wear-resistant tooling components processed by grinding, EDM, and polishing according to the application.
Spare components can be produced from controlled drawings or qualified samples, with critical dimensions inspected to support reliable replacement and maintenance.
Typical Molds Types
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Core‑Cavity Inserts -
Thread Mold Inserts -
Collapsible Cores -
Slide‑Lifter Parts -
Ejection Parts -
Cutting Inserts -
Wear‑Resistant Parts -
Guide‑Lock Parts -
EDM Copper Electrodes -
Custom Mold Spares
Have a similar part to manufacture?
Get Free Quote Functional Deliverables for Mold Components
- System‑Level Component Matching: Mold components engineered for stable operation within the complete tooling system, not merely dimension‑compliant parts
- Critical Geometric Verification: Verified alignment, shut‑off condition and concentricity for stable mold performance
- Optimized Moving Mechanism: Proper sliding clearance and qualified thread form to ensure smooth mold movement
- Material & Surface Control: Controlled surface finish and application‑specific material hardness
- Spare‑part Interchangeability: Interchangeable components for easy mold repair and maintenance
- Customized Inspection Routine: Machining and inspection workflow tailored to actual mold functional requirements
Industries We Support
Applications cover mold, motion, fluid‑control and precision‑equipment, built around fit, wear, load, speed, corrosion and cleanliness demands.
Common Mold Materials
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. Steel / Aluminum .-
P20 / 3Cr2Mo
General‑purpose pre‑hardened steel. For low‑to‑medium volume injection molds, non‑critical housings and structural parts, good cost‑performance.
Typical Applications- General injection molds,
- housings
- appearance parts
- medium-volume tooling
Cost Efficiency:
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718 / 1.2738
Improved P20 grade. Uniform hardness, excellent polishability, suitable for cosmetic appearance plastic parts and medium‑large mold bases.
Typical Applications- General injection molds,
- housings
- appearance parts
- medium-volume tooling
Cost Efficiency:
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S136 / 1.2083
Martensitic stainless mold steel. Anti‑corrosion against corrosive resin, outstanding polishing performance, widely used for medical, optical and transparent product molds.
Typical Applications- Medical, optical
- optical, cosmetic
- corrosive-resin applications
Cost Efficiency:
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SKD11
High‑carbon high‑chromium steel. High hardness & wear resistance, for stamping dies, cutting inserts and high‑wear mold parts.
Typical Applications- Stamping
- cutting,
- forming
- high-wear tooling
Cost Efficiency:
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H13 / 1.2344
Universal hot‑work steel. Excellent thermal‑shock and thermal‑fatigue resistance, for aluminum‑alloy die‑casting inserts and high‑temperature mold components.
Typical Applications- Die-casting inserts
- high-temperature tooling
Cost Efficiency:
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Process & Equipment Capabilities
We deploy a full‑range manufacturing workflow tailored for high‑precision mold components, covering material removal, special‑form machining, multi‑mode grinding, surface finishing and comprehensive metrology verification.
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CNC Machining
CNC turning and milling for roughing, datum creation and complex geometry
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EDM Processing
Sinker EDM for deep ribs, narrow slots and sharp internal hardened features; Wire EDM for profiles, openings, punches and inserts.
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Surface Grinding
Surface grinding for flatness, parallelism and controlled thickness
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Precision Grinding
Cylindrical and centerless grinding, profile / optical grinding and coordinate grinding for round components and fits
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Surface Treatment
Polishing, lapping, coating or nitriding coordination according to application
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Metrology Inspection
CMM, optical, profile, roundness, hardness and roughness inspection as required
*Not sure which finish is right for your part? Explore our complete guide
Tolerance Guide
The inspection plan should follow the component’s function. For example, a threaded core may require pitch, runout, concentricity, surface finish, and hardness checks, while a cavity insert may require profile, shut-off, flatness, position, and polishing verification.
Component‑Focused Inspection Workflow
- Conduct critical‑feature review and material‑hardness verification before machining.
- Carry out datum‑based in‑process inspection for complex and rotational parts.
- Verify surface finish and deliver required first‑article or full‑dimensional reports.
- Apply controlled packaging to protect precision and polished surfaces.
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Mold Component Type
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Key Inspection Items
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Part Tolerance
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Dimension Meet Drawing
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First Sample Lead Time
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Threaded Core
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Pitch, runout, concentricity, surface finish, hardness
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±0.001mm
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100%
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25 days
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Cavity Insert
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Profile, shut‑off, flatness, position, polishing verification
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±0.001mm
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100%
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25 days
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Rotational Components
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Roundness, concentricity, runout
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±0.001mm
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100%
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25 days
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Complex‑geometry Parts
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Profile, contour, key position dimensions
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±0.001mm
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100%
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30 dys
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Injection Molding Process
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STEP 1
Drawing Review -
STEP 2
Process Planning -
STEP 3
Material & Roughing -
STEP 4
Heat Treatment -
STEP 5
Precision Finishing -
STEP 6
Secondary Machining & Inspection -
STEP 7
Final Packaging
Case Studies
We showcase successful projects across multiple industries, reflecting our expertise in mold design, manufacturing, and precision engineering.
Guides to Optimize Your Mold Design
FAQs about Injection Molding Service
Find the Right Grinding or EDM Route
Send the drawing, material, hardness, quantity, critical geometry, surface requirements, and heat-treatment condition. Our engineering team will review whether grinding, sinker EDM, wire EDM, or a combined process is most suitable.
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Our Equipment
We deliver full in‑house mold‑component production via high‑precision manufacturing and inspection equipment, supporting CNC, EDM, grinding, surface finishing and metrology for tight‑tolerance and hardened‑material needs.
Expert Team, Exquisite Molding
The Leadpoint mold design team combines deep industry experience with practical expertise. Our core team members include:
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General Manager / Founder: 15+ years in precision mold and machining
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Technical Director: 12+ years in CNC machining and mold design
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Production Manager: 10+ years in precision manufacturing management
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Quality Manager: 8+ years in precision parts quality control
What You Can Expect From Us
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Functional Tolerance Planning
We evaluate fits, mating relationships, shut-offs, threads, sliding interfaces, and replacement requirements instead of treating all dimensions equally.
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Hardened Material Capability
Process routes can combine EDM and grinding for hardened tool steels and tungsten carbide components.
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Interchangeability Focus
Controlled datums and dimensional reporting support repeat orders and replacement components.
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Multi-Process Manufacturing
CNC, EDM, wire EDM, grinding, polishing, and inspection are coordinated according to part function.
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Protection of Precision Surfaces
Polished, lapped, sharp-edged, and close-fit components are cleaned and packaged to reduce handling damage.
