Custom Plastic Parts Manufacturing
Based in Shenzhen, Plasticpartsmfg provides precision custom plastic component manufacturing for prototyping, low-volume bridge runs, and full-scale contract production. We machine, mold, cast, and print custom parts strictly to your engineering drawings and specifications.
Fast Engineering Response
Instant Drawing Review
Manufacturing Capabilities
Full-Scope Custom Plastic Manufacturing Processes
From rapid functional verification to durable production components, select the ideal process for your geometry, material properties, and target batch volume.
Plastic CNC Machining
3-axis, 4-axis, and 5-axis subtractive milling and turning for high-precision components without mold tooling costs.
- • Materials: POM (Delrin), PEEK, PA (Nylon), PC, PMMA, PTFE
- • Tolerance: Down to ±0.05 mm (±0.002 in)
- • Best for: 1 to 500 units, structural prototypes, tight-fit parts
Plastic Injection Molding
Rapid aluminum tooling for bridge runs and hardened steel production molds for repeat high-volume manufacturing.
- • Materials: ABS, PP, PC, PA6/66, PBT, PPS, PPSU, TPE
- • Tooling Types: Prototype tooling, bridge molds, multi-cavity
- • Best for: 500 to 100,000+ units, lowest unit cost
Industrial 3D Printing
Additive manufacturing using SLA, SLS, and FDM technologies for fast visual checkouts and complex internal geometries.
- • Materials: Photosensitive resins, Nylon PA12, ABS, PLA
- • Lead Time: As fast as 24 - 48 hours for prototypes
- • Best for: 1 to 20 units, rapid concept verification
Vacuum Casting & Silicone Molding
Polyurethane vacuum casting using soft silicone tooling to replicate injection-molded physical properties at low setup cost.
- • Simulated Resins: ABS-like, PP-like, PC-like, Rubber/Silicone
- • Mold Life: 15 - 25 shots per silicone pattern
- • Best for: 10 to 100 units, field testing, cosmetic samples
Thermoforming & Laser Cutting
Heavy-gauge vacuum forming and flat sheet precision CNC / laser profiling for equipment covers, guards, trays, and panels.
- • Materials: ABS, Acrylic (PMMA), Polycarbonate, HDPE, PVC
- • Features: Large enclosures, bezels, clear shields, trays
- • Best for: Low tooling cost for large-dimension parts
Blow & Rotational Molding
Hollow-body component production for fluid reservoirs, industrial tanks, air ducts, specialized enclosures, and flotation parts.
- • Materials: HDPE, LDPE, PP, PVC, engineered polyamides
- • Characteristics: Seamless hollow sections, uniform walls
- • Best for: Fluid vessels, ducting, heavy-duty hollow cases
Engineering Specifications
Process Comparison & Manufacturing Window
Select the appropriate manufacturing strategy based on your project requirements, target quantity, and dimensional tolerance.
| Process | Standard Tolerance | Economic Quantity | Primary Materials | Typical Lead Time |
|---|---|---|---|---|
| CNC Machining | ±0.05 mm | 1 – 500 pcs | POM, PEEK, PA, PC, HDPE, PTFE | 3 – 7 days |
| Injection Molding (Rapid) | DIN 16742 / ISO 20457 | 100 – 5,000 pcs | ABS, PC, PP, PA66, PBT | 12 – 18 days |
| Injection Molding (Production) | DIN 16742 Standard | 5,000 – 100,000+ pcs | All commercial & engineering resins | 25 – 35 days |
| Vacuum Casting | ±0.15 mm / 100 mm | 10 – 100 pcs | PU resins (ABS-, PC-, Rubber-like) | 7 – 10 days |
| Industrial 3D Printing | ±0.15 – ±0.20 mm | 1 – 20 pcs | PA12, Photopolymers, ABS | 2 – 4 days |
| Thermoforming / Vacuum Forming | ±0.30 – ±0.50 mm | 20 – 1,000 pcs | ABS, PMMA, PC, HDPE, PVC | 10 – 15 days |
Resin Selection
Engineered & Commodity Thermoplastics
We machine and mold parts using factory-certified prime resins. Material certificates (CoC) and UL test certifications are provided upon project specification.
Standard Plastics Commodity
Cost-effective materials suitable for general housings, fluid containers, consumer hardware, and packaging.
Engineering Plastics Structural
Enhanced mechanical properties, dimensional stability, impact resistance, and continuous operational loads.
High-Performance Polymers Extreme Duty
Resistant to extreme temperatures, steam sterilization, aggressive chemicals, and severe mechanical friction.
Project Lifecycle Support
Seamless Support From Prototype to Scaled Production
Avoid the friction of re-tooling or qualifying multiple vendors. Plasticpartsmfg helps you transition through each engineering and commercial milestone.
Concept Prototyping
1 – 20 Pieces
Fast verification of geometry, fit, and visual proportions via 3D printing, laser profiling, and quick-turn CNC turning/milling.
Functional Validation
10 – 100 Pieces
Parts produced in real engineering polymers for structural testing, drop tests, mechanical wear checks, and lab trials.
Bridge Production
50 – 5,000 Pieces
Pilot lot manufacturing before hard production tooling is ready. Rapid aluminum mold inserts or CNC batch production.
Contract Production
5,000 – 100,000+ Pieces
High-cavity injection molding, blow molding, automated secondary finishing, custom packaging, and scheduled repeat orders.
Post-Processing & Finishing
Comprehensive Secondary Operations & Assembly
Plastic parts frequently require cosmetic enhancement, threaded hardware installation, surface preparation, or full sub-assembly. We carry out secondary processing in-house to minimize logistic touchpoints.
Surface Texturing & Polishing
SPI mold finishes (A1 optical polish down to D3 sandblast), bead blasting for CNC parts, and chemical vapor smoothing for smooth 3D prints.
Color Matching & Painting
Pantone and RAL color matching for molded resins, PU spray painting with matte, semi-gloss, soft-touch, or high-gloss protective clear coats.
Marking & Identification
Pad printing on curved surfaces, silk screen printing for multi-color logos and schematics, and laser marking for permanent serial numbers.
Hardware Inserts & Joining
Ultrasonic brass threaded insert installation, heat staking, solvent chemical bonding for acrylic/polycarbonate, and structural adhesives.
Mechanical Sub-Assembly & Custom Packaging
Integration of O-rings, seals, fasteners, springs, and mating enclosures. Custom blister packs, antistatic bags, foam trays, and export carton packaging.
Target Applications
Engineered Components Across Key Industries
We serve mechanical engineering teams, equipment builders, and consumer device manufacturers across North America, Europe, and global markets.
Robotics & Automation
- • POM precision gears and pinions
- • Low-friction wear guides & slides
- • End-effector lightweight grippers
- • Protective cable brackets & mounts
Electronics & Enclosures
- • Flame-retardant device bezels (UL94)
- • Handheld ABS/PC enclosures
- • PMMA / Polycarbonate display lenses
- • Transparent LED light pipes
Industrial Equipment
- • Chemically inert fluid manifolds
- • PEEK structural isolation blocks
- • Heavy-gauge thermoformed machine shields
- • Custom HDPE blow-molded reservoirs
Laboratory & Medical Devices
- • Autoclavable PSU/PPSU fluid fittings
- • Diagnostic chassis covers
- • Pipette brackets & test fixtures
- • High-purity PTFE valve components
Drawing-Based Quality Control & Inspection
Every manufactured batch is governed by your 2D technical drawings and critical tolerance definitions. We verify critical dimensions using optical measurement, CMM, micrometers, and thread plug gauges before releasing shipments.
Non-Disclosure Agreement (NDA) supported upon request.
Ready to Discuss Your Custom Plastic Parts?
Send Plasticpartsmfg your CAD files, drawings, or part requirements. Our engineering team in Shenzhen will evaluate material selection, process efficiency, and deliver a formal quotation within 24 hours.