Precision Wire EDM Machining | Ra 0.4 Surface Finish Mold Components

Product Overview

CNC machining plastic mould parts with W-EDM hole fabrication are precision mold components designed for injection mold systems requiring accurate hole geometry and controlled surface roughness. Senlan Precision manufactures these mould parts strictly according to customer drawings, achieving surface finish up to Ra 0.4 through optimized CNC machining and wire EDM processes.

Key Features & Advantages

• CNC-machined mould parts with integrated W-EDM hole processing

• Surface roughness controlled to Ra 0.4 on functional areas

• High dimensional accuracy for mold alignment and assembly

• Stable hole geometry for pins, inserts, and functional cores

• Suitable for multi-cavity and high-output injection molds

• Consistent repeatability for batch production

• Built-to-Print manufacturing based on customer drawings

Applications / Industry Use

• Plastic bottle and packaging injection molds

• Bottle cap, closure, and dispensing system molds

• Medical consumables and syringe mold tooling

• Cosmetic and daily packaging mould systems

• Precision multi-cavity injection mold assemblies

Mold Structure & Design Description

These mould parts are typically used in areas requiring precise hole positioning, such as guide holes, pin holes, cooling-related passages, or insert interfaces. CNC machining ensures overall dimensional accuracy, while W-EDM processing is applied to achieve sharp internal profiles and controlled surface roughness. A Ra 0.4 finish helps reduce friction, improve assembly fit, and maintain mold stability during long production cycles.

Manufacturing Capability & CNC Machining

Senlan Precision integrates CNC machining and W-EDM processes to manufacture high-precision mould components.

Manufacturing capabilities include:

• CNC milling and turning for complex mold geometries

• Wire EDM (W-EDM) for high-precision hole and profile machining

• Surface roughness control down to Ra 0.4

• Precision grinding for flatness and parallelism

• Tight tolerance control for multi-cavity mold systems

High-precision equipment from MAKINO and HARDINGE supports stable machining accuracy and repeatable surface quality.

Custom Development / OEM Cooperation Process

1. Customer submits 2D drawings or 3D CAD data

2. Engineering review of tolerances and surface requirements

3. CNC machining and W-EDM fabrication

4. In-process and final dimensional inspection

5. Quality verification and export packaging

6. Shipment according to customer requirements

All mould parts are produced under a Built-to-Print OEM model.

Quality Control & Export Experience

• Incoming material inspection

• In-process dimensional and surface roughness checks

• Final inspection before shipment

• Stable quality control for batch and multi-cavity projects

• Extensive experience supporting international mold manufacturers

Related Products

• Injection mold core inserts and cavity inserts

• Precision guide pins and bushings

• EDM electrodes and mold tooling components

• Multi-cavity mold components

• Custom CNC machined mold parts

FAQ – Technical & Purchasing

Q1: Can Ra 0.4 surface finish be guaranteed on functional holes?
Yes. Surface finish is controlled through optimized CNC and W-EDM parameters based on drawing requirements.

Q2: Are these mould parts standard or customized?
All parts are custom-manufactured according to customer drawings.

Q3: Are these parts suitable for multi-cavity molds?
Yes. They are commonly used in high-cavity injection mold systems.

Q4: What information is required for quotation?
Technical drawings, material requirements, tolerances, surface finish specifications, and order quantity.

Request a Quote

For technical evaluation and pricing, please submit your drawings and machining requirements.
Our engineering team will provide a professional CNC and W-EDM manufacturing solution tailored to your injection mold project.