Engineered exclusively for wireless headphone OEM/ODM manufacturers, consumer electronics brands, and TWS (True Wireless Stereo) accessory suppliers, our client-drawn earbud case injection molds are precision-crafted to 1:1 match your 2D/3D drawings (CAD, STEP, IGES, DXF). Tailored for all mainstream wireless headphone types—mini TWS earbuds, over-ear noise-canceling models, and sports waterproof variants—they excel at replicating tiny, complex earbud case details (micro-charging contacts, noise-canceling vent holes, magnetic lid grooves) with ±0.003mm precision, while S136 anti-rust steel ensures durability against production cleaners and long-term use.
Earbud case production faces unique challenges that generic molds can’t solve—our design directly targets these pain points to protect your product functionality and production efficiency:
- Tiny Dimensions Demand Ultra-Precision: Earbud cases are 3–5cm in size, with micro-features (e.g., 1mm-wide charging contacts, 0.8mm-thick lid hinges). Even 0.005mm deviation causes “charging contact misalignment” (60% of defective cases) or “lid won’t snap shut”—raising scrap rates to 18%+;
- Rust Ruins Mold Life in Humid Production: Earbud case molds are often cleaned with water-based solvents (to remove resin residues), and standard steel molds rust after 50k cycles. This forces 2–3 mold replacements per year for high-volume runs;
- Mismatched Drawings Delay Custom Designs: Many molds only support basic 2D files, but TWS brands rely on 3D drawings to define subtle curves (for ergonomic fit) or hidden structures (e.g., battery compartment ribs). File mismatches add 4–6 days of rework, missing product launch windows.
Heya solves these with client-drawn accuracy, ±0.003mm precision, and S136 anti-rust steel—turning “micro-manufacturing headaches” into “reliable, high-quality earbud case output.”
We tailor every mold to your earbud case’s unique micro-structures and design needs, with a focus on details that define user experience:
Our molds are engineered to master the precision required for tiny earbud cases, with specs that directly impact your product quality and production costs:
Our entire earbud case mold production process—from drawing review, S136 steel selection, and CNC micro-machining to final precision inspection—strictly complies with ISO 9001:2015 standards. This ensures:
- Consistent Micro-Precision: Every mold undergoes Zeiss CMM testing (±0.0005mm accuracy) to verify ±0.003mm tolerance for micro-features;
- Traceable Quality: Full records (S136 steel mill certificates, anti-rust test reports, machining logs) are provided for your supply chain audits;
- Reliable Problem-Solving: Clear protocols for addressing minor deviations (e.g., subtle contact alignment tweaks) to avoid delaying your production.


- TWS OEM/ODM Manufacturers: For high-volume production of standard earbud cases (e.g., 100k+ units/month), where S136 durability and ±0.003mm precision cut long-term costs;
- Consumer Electronics Brands: For launching custom earbud lines (e.g., noise-canceling TWS, sports waterproof models), where 3D drawing support ensures unique designs (e.g., ergonomic curves) are replicated perfectly;
- Accessory Suppliers: For niche earbud cases (e.g., luxury leather-wrapped, eco-friendly resin), where micro-precision ensures compatibility with original headphones.
Need a custom mold for your wireless earbud case design? Upload your 2D/3D drawing (CAD/STEP)—Heya’s engineers (with 3+ years of micro-scale consumer electronics mold experience) will provide a free DFM report (including micro-feature optimization tips) and detailed quote within 24 hours.