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Skip to content Custom PMMA components for medical, diagnostic, laboratory, and industrial equipment. TENGHUI provides in-house CNC milling and turning for transparent fluid-handling blocks, manifolds, viewing components, covers, and prototype assemblies.
We review channel geometry, threaded ports, mating surfaces, and transparency requirements to plan machining, finishing, and inspection for your project.
PMMA, also known as acrylic, is commonly selected for its clear appearance, low weight, and suitability for machining and polishing. Material grade, stock quality, thickness, and manufacturing history influence the finished result. We review material selection against your drawing, application, and appearance requirements.
| Material Option | Key Characteristics & Selection Notes | Typical Applications |
|---|---|---|
| Cast Acrylic | Often considered for machined components with pockets, holes, threads, and polished surfaces. Stock thickness variation and residual stress should be considered during process planning. | Transparent manifolds, fluid-handling blocks, instrument windows, and machined housings |
| Extruded Acrylic | Commonly used for sheet-based components. Grade, thickness, machining requirements, and sensitivity to processing stress should be reviewed. | Panels, covers, display components, and selected viewing windows |
| Specialty or Modified PMMA | Colored, impact-modified, or other specialized grades can be evaluated where available. Properties must be confirmed for the specific material. | Application-specific covers, equipment components, and visual prototypes |
| Characteristic | General Guidance | What to Specify |
|---|---|---|
| Light Transmission | Common clear grades can provide approximately 92% visible-light transmission under specified conditions | Required material, thickness, transparency, haze, or optical test requirements |
| Density | Common unfilled grades are approximately 1.19 g/cm³ | Grade-specific data where component weight is critical |
| Surface Hardness | Offers useful scratch resistance compared with many transparent plastics, but can still be scratched | Handling conditions, cleaning methods, and surface protection |
| Impact Performance | More brittle than polycarbonate and sensitive to notches and concentrated loads | Impact exposure, fastening loads, and edge geometry |
| Heat Performance | Depends on grade, loading, exposure time, and part design | Continuous and peak operating temperatures |
| Chemical Compatibility | Some solvents, cleaners, and reagents can cause damage or stress crazing | Contact substances, concentrations, temperatures, and exposure duration |
Finishing can improve transparent appearance, reduce visible machining marks, or create a matte surface. The appropriate method depends on geometry, access, dimensional requirements, and intended use. Identify the surfaces that require transparency rather than assuming every surface needs the same finish.
Machined surfaces may retain visible tool marks or a translucent appearance. This is a practical option for non-viewing surfaces and features where the machined finish meets functional requirements.
Suitable polishing methods can improve clarity and gloss on accessible edges and flat viewing surfaces according to geometry and finish requirements.
Progressive sanding and buffing can reduce machining marks and improve the transparent appearance of accessible external surfaces.
Flame polishing may be considered for selected accessible edges where it suits the application, producing a fast, high-gloss edge finish.
Controlled surface preparation can produce a frosted or matte appearance for selected cosmetic or light-diffusing components.
Screen printing or other suitable marking methods can be evaluated for logos, labels, measurement scales, and instrument panel graphics.
PMMA is a practical material for transparent equipment components where visibility, appearance, and machining flexibility are important.
We review the required viewing surfaces and select suitable finishing methods for accessible areas.
Mechanical polishing, edge polishing, or flame polishing may be considered according to geometry and application. Not every surface requires polishing, and internal features may have access limitations.
For appearance-critical projects, reference samples can help establish acceptance criteria. Measurable optical requirements should be specified separately.
PMMA is commonly considered when transparent appearance, surface hardness, and polishing are priorities.
Polycarbonate may be more suitable where impact resistance is the main concern. Selection should also account for temperature, chemical exposure, loads, and assembly requirements.
Neither material should be selected for a safety-critical application based on a general comparison alone.
Cast acrylic is often considered for detailed machined components, but the best choice depends on stock quality, geometry, thickness, finish, and application.
Extruded acrylic can also be suitable for selected parts. It should not be ruled out without reviewing the specific requirements.
Whichever material is selected, machining heat, residual stress, and subsequent finishing must be managed.
Yes. TENGHUI provides in-house CNC machining of PMMA components for medical, diagnostic, and laboratory equipment, including transparent fluid-handling blocks, manifolds, covers, and viewing components.
We review channel geometry, threaded ports, mating surfaces, transparency, and dimensional requirements according to your drawings. Material grade, finishing, cleaning, and inspection requirements are confirmed for each project.
Where leak testing, pressure testing, or specialized cleanliness is required, include the specification so the scope can be assessed during quotation.
We review material stock, wall thickness, corner geometry, workholding, and machining sequence before production.
Staged machining and appropriate stress-management measures can be evaluated for sensitive parts. Finishing, bonding, and cleaning methods must also be compatible with the material and application.
For assembled components, fastening loads and contact with chemicals should be considered during design review.
Tolerances are confirmed after reviewing part size, geometry, stock condition, and finishing requirements.
Thin walls, deep cavities, temperature changes, and polishing can affect final dimensions. Mark critical fits, sealing surfaces, threads, and flatness requirements on your drawing.
Dimensions should clearly apply to the finished part where polishing or other secondary processing is required. Dimensional reports and inspection methods can be discussed during quotation.
Straightforward CNC prototypes can often be completed in approximately 3–7 working days.
Complex channels, extensive polishing, larger quantities, and special inspection may require additional time. We confirm the delivery plan after reviewing your files and requirements.
Please provide:
For fluid-handling components, include port details, channel dimensions, sealing arrangements, and any pressure or leakage criteria.
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.
