High-precision ABS electronic enclosure developed for consistent PCB fitment and zero cosmetic defects across high-volume production.
Proven Results
Material
ABS
Part Size
~37mm Profile
Tolerance
±0.02mm
Localized Thickness
0.30–0.35mm
Volume
100,000+
This project involved the development and production of a precision injection molded ABS electronic housing designed for secure PCB mounting. The component required high dimensional stability and tight tolerance control to ensure consistent PCB seating during assembly. The part was produced in high volumes over a sustained production cycle, with strict quality expectations for both functional and cosmetic performance.
The primary challenge was maintaining ±0.02mm positional accuracy in critical PCB locating zones. Even minor shrinkage variation or dimensional drift resulted in PCB misalignment, leading to assembly rejection risks.
Additionally, the part included localized thin-wall sections (~0.30–0.35mm), increasing the complexity of material flow and shrinkage control. The visible surfaces required zero gate marks, adding a cosmetic constraint alongside dimensional precision.
Specific Challenges
DFM Validation
Dual-stage DFM validation to optimize part geometry and tooling approach. Identified critical areas requiring localized process control.
Gate Strategy
Core-side banana gating to eliminate visible gate marks on cosmetic surfaces while maintaining optimal material flow to critical geometry.
Shrinkage Control
Localized shrinkage control in thin-wall regions through optimized tool design and controlled cooling strategy for dimensional stability.
Cooling & Stabilization
Controlled cooling strategy to ensure dimensional stability and reduce warpage across the thin-wall geometry. Optimized cycle parameters for consistent repeatability.
Structured Validation
Structured T0 and T1 validation trials for dimensional verification before mass production release. Process parameters locked after qualification.
±0.02mm
Tolerance Achieved
100%
PCB Fitment Success
100K+
Parts Delivered
Zero
Dimensional Complaints
Tight tolerance injection molding requires localized process control, not just global tool accuracy. Critical dimensions must be managed at the feature level.
Thin-wall geometries significantly influence shrinkage behavior and must be managed during DFM — not corrected after tooling.
Gate location selection directly impacts both cosmetic quality and dimensional consistency. Core-side gating solves both simultaneously.
Structured validation (T0/T1) is critical for achieving repeatability in mass production. Process parameters must be locked before volume release.
If your application requires tight tolerance control, high repeatability, or complex geometry, our team can support your project from DFM through production.
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