1.2083 Steel Multi-Cavity Core Insert for Cosmetic Pump Mold with High Precision and Mirror Polish

High-precision multi-cavity core insert manufactured from 1.2083 / STAVAX / SS420 grades, engineered for cosmetic spray & pump molds. Designed for high-volume production of cosmetic pump housings and actuator parts where surface finish, dimensional stability and cavity interchangeability are critical.

• Material: 1.2083 (or STAVAX / SS420 on request)
• Application: multi-cavity cosmetic pump molds (spray pumps, actuator housings)
• Typical cavities: 4-16 (customizable)
• Surface finish: mirror polish option for cosmetic parts
• Typical tolerance: ±0.01 mm (standard); up to ±0.005 mm on request

Our 1.2083 multi-cavity core insert is a precision CNC-machined mold core block specially made for cosmetic pump tooling. Each bore and core pocket is processed and finished to ensure consistent part geometry across every cavity. The insert is optimized for:

• Excellent polishability (ideal for glossy cosmetic parts)
• Consistent dimensional stability under running conditions
• Easy maintenance and interchangeability in modular mold systems

Manufacturing process includes high-precision CNC roughing & finishing, EDM where required, grinding, and manual polishing. Final inspection uses CMM measurements and surface profilometry to guarantee repeatability.

This core insert is widely used in high-throughput plastic injection tooling for cosmetic and personal care packaging:

• Cosmetic spray pumps and actuator housings
• Airless pump components and closures
• Perfume & cosmetic dispensing pumps
• Multi-cavity production for packaging lines (4, 8, 12, 16 cavities)

Suitable for OEMs and mold makers producing consumer-facing cosmetic parts that require optical surface quality and tight dimensional control.

We manufacture to industry standards for precision mold tooling:

• Materials available: 1.2083, STAVAX, SUS420, P20, S136 (upon request)
• Processes: 5-axis CNC turning/milling, wire-EDM, sinker EDM, precision grinding, manual & robotic polishing, thermal stress-relief
• Standard tolerance: ±0.01 mm; Enhanced tolerance: ±0.005 mm for critical features (subject to drawing & sample approval)
• Surface finish: Ra 0.2-0.4 μm achievable; mirror polish (Ra <0.1 μm) for visible cosmetic parts
• Heat treatment / finish: Supplied in specified hardness or pre-hardened; coatings (TiN / DLC) available on request for longer mold life
• Inspection: CMM report, 2D/3D comparatives, roughness report, and first-article inspection available

Engineered for cosmetic manufacturing advantages:

• Visual quality: Mirror-polished cavity surfaces reduce post-processing and improve final appearance
• High yield: Consistent cavity dimensions minimize rejects and rework
• Modularity: Core insert design allows fast exchange and reduced downtime
• Durability: Choice of stainless tool steels (STAVAX / 1.2083) resists corrosion and supports long run lengths for water-based or alcohol based cosmetic formulations
• Faster time to market: Proven manufacturing workflow (CNC → EDM → polish → inspection) shortens lead times without sacrificing quality

To prepare an accurate quote please provide:

• Part drawing (STEP / IGES) or 2D CAD — with critical dimensions and tolerance notes
• Required material — 1.2083 / STAVAX / alternative
• Cavity count — e.g., 4 / 8 / 12 / 16
• Surface finish requirement — e.g., mirror polish, Ra target
• Expected production runs — to size mould life & coating options
• Delivery & packing requirements and any special testing (CMM report, hardness test)
• Target budget & lead time (optional — helps us propose best options)