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Skip to content Custom PC components for industrial equipment, instrumentation, automation, and laboratory devices. TENGHUI provides in-house CNC milling and turning for prototypes, low-volume orders, and repeat production.
We review material selection, geometry, critical dimensions, and appearance requirements to support the manufacture of covers, housings, viewing components, and mechanical parts.
Polycarbonate, also known as PC, is an engineering thermoplastic commonly selected for its toughness and the transparency available in clear grades. Material performance depends on the specific grade, stock form, thickness, processing history, and service conditions. Material availability and requirements are confirmed during quotation.
| Material Characteristic | General Guidance | What to Specify |
|---|---|---|
| Transparency | Clear grades can be used for viewing components. Machining and finishing affect the final appearance. | Transparent surfaces, acceptable tool marks, and any measurable optical requirements |
| Impact Performance | Generally offers higher impact resistance than standard PMMA, but can still crack or fail under unsuitable conditions | Impact exposure, temperature, thickness, and fastening loads |
| Density | Common unfilled grades are approximately 1.20 g/cm³ | Grade-specific data where component weight is critical |
| Strength & Stiffness | Suitable for many housings, covers, and mechanical components | Loads, support points, allowable deflection, and service life |
| Heat Performance | Depends on grade, load, exposure time, and geometry | Continuous and peak operating temperatures |
| Chemical Compatibility | Some cleaners, solvents, and other substances can cause stress cracking | Contact substances, concentrations, temperature, and exposure duration |
| Surface Durability | Uncoated surfaces can develop scratches during handling and cleaning | Cosmetic requirements, cleaning methods, and protection during assembly |
| Dimensional Stability | Machining heat, residual stress, clamping, and temperature changes can affect dimensions | Critical fits, flatness, and inspection conditions |
*Use the selected material’s data sheet for engineering assessment. Heat deflection temperature is a test result under defined conditions, not a universal continuous-use temperature.
Finishing is selected according to function, appearance, geometry, and dimensional requirements. Identify the surfaces that need a transparent appearance and those where visible machining marks are acceptable.
Parts retain visible tool marks without an additional decorative treatment. Machined areas of clear PC may appear translucent rather than fully clear.
Accessible edges are deburred according to the drawing and agreed requirements to remove burrs and sharp edges safely.
Finishing can be evaluated to improve the clear appearance of selected accessible surfaces where viewing or aesthetic clarity is required.
Cleaning methods are selected for compatibility with PC. Transparent parts are packed to reduce contact, rubbing, and handling marks.
PC is a useful option where toughness, low weight, and transparency are important. Material selection should reflect the component’s actual operating conditions.
PC is often considered when impact resistance and toughness are priorities.
PMMA may be more suitable where surface hardness, transparent appearance, and polishing are the main considerations.
Selection should also account for loads, operating temperature, chemical exposure, assembly, and cost. Send your requirements so manufacturing suitability can be reviewed.
Clear PC stock can be used for transparent components, but machining leaves tool marks that affect appearance.
Selected accessible surfaces can be reviewed for additional finishing. Specify which surfaces need to be clear, the intended viewing function, and any measurable acceptance requirements.
Not all internal features can be finished to the same appearance as accessible external surfaces.
Tolerances are confirmed after reviewing part size, geometry, material stock, and finishing requirements.
Thin walls, large flat areas, clamping, and temperature changes can affect final measurements. Mark critical dimensions, fits, flatness, and thread requirements on your drawing.
Where secondary finishing is required, the drawing should identify the dimensions that apply to the finished part. Inspection methods and dimensional reports can be discussed during quotation.
We review stock selection, wall thickness, corner geometry, workholding, and machining sequence before production.
Process planning considers machining heat, residual stress, and support for sensitive features. Staged machining may be used where appropriate.
Cleaning agents, assembly loads, and contact chemicals should also be checked for compatibility with the selected PC grade.
We select packaging according to part geometry and cosmetic requirements, using suitable surface protection and separation to reduce rubbing and contact.
Identify appearance-critical surfaces and any restrictions on films, adhesives, or packaging materials before production.
Straightforward CNC prototypes can often be completed in approximately 3–7 working days.
Larger quantities, complex geometry, transparent finishing, and special inspection may require additional time. We confirm the delivery plan after reviewing your files and project requirements.
Please provide:
For assembled components, include mating details, fastening methods, and critical clearances.
Upload your 2D drawings (PDF/DWG/DXF) and 3D CAD files (STEP/IGES). We evaluate part geometry, materials, and tolerances within 24 hours.
Once we receive your design files, our senior manufacturing engineers will manually perform a comprehensive DFM review and deliver an accurate, optimized quote within 24 hours.
