Machined Plastics FAQs

We manufacture custom machined plastic components for regulated applications that demand precision, repeatability, and application-specific performance. Our work supports programs where tolerances, material behavior, and quality control matter. We are built for engineered production, not commodity fabrication. If your part requires a controlled manufacturing process that meets intense regulations, we may fit.

No. We do not sell stock plastic shapes or act as a raw material supplier. Our focus is on machined plastic components built to customer specifications. If you need bulk sheet, rod, tube, or catalog material, we can direct you to our partners at Quantum AEP.

Yes, but only in select cases. We review prototype work when it has a clear path to higher- volume production, comes from a legitimate OEM or MRO, and is not tied to highly commoditized consumer goods. Prototype engagement depends on how mature the design is and what must be learned from the build. We evaluate each opportunity on that basis.

We support industries where precision plastic components are integral to performance, including medical, life sciences, aerospace, OEM, and research systems. These programs typically require careful attention to geometry and material selection with certain quality expectations. If your application falls outside these sectors, it may still be viable if the technical requirements are comparable.

We are not the right supplier for commodity parts, general fabrication, or projects without defined engineering requirements or scaling plans. We also do not serve as a bulk plastics distributor. Work that requires no customization, no tolerance control, and no application review is typically better suited to another supplier. We also do not support resale-only or material-resale requests.

We support precision plastic machining processes appropriate to the part geometry and performance requirements. That includes milling, turning, drilling, and specialized operations where the design requires them. Because every project is customized, the production path may combine multiple technologies to achieve the required result.

Yes. This is called “design for manufacturability” or “DFM”. At that stage, the main goal is usually to confirm feasibility, identify risks, and narrow down the right manufacturing approach. Even if the design is not final, details such as application, materials, fluid, pressure, and volume can still guide the review.

Yes, when the geometry and material support it. These features require careful attention to accuracy, chip control, and finish quality. Their feasibility depends on aspect ratio, tolerance, and part function. Challenging features should be reviewed early by both the manufacturer and the design team.

While not typically offered as a standalone service, these secondary operations are available when they are part of the component’s functional or identification requirements. Availability depends on the component design and material. Any post-production requirements should be included in the initial quote request.

We manage burr control and surface quality as part of production by using advanced machining techniques and skill. Plastic components can be sensitive to edge condition and tool behavior, so finishing expectations must be clear from the start. Essential edges and surface requirements should be called out on the drawing as that reduces risk and improves consistency.

Inspection and documentation options depend on the needs of the application and the  level of traceability required. Some projects may only need standard quality verification, while others require more detailed records, inspection data, or support for regulated environments. If your component will be used in integral applications, it is best to identify those and setup documentation needs early. That allows the review process to account for them.

To have a complete and accurate quote package, this typically requires the following:

1. A drawing or CAD file,

2. The application,

3. Expected volume,

4. Target timeline, and

5. Performance requirements.

Material preferences, environmental conditions, tolerances, and inspection needs should also be included. Clear input improves the accuracy of both feasibility review and pricing. Incomplete information usually slows the process.

We can suggest certain materials based on known project aspects. Material selection is an important part of the machining process and should be chosen based on:

1. The operating environment,

2. Chemical exposure,

3. Temperature,

4. Load and wear, and

5. Regulatory expectations.

Be aware that the right material is application-specific. We will review those requirements with you before making a suggestion.

Tolerance capability depends on geometry, material, feature size, and the role of the part in the system. Some parts can be produced to very tight tolerances (as tight at 12.5μm sometimes) while others require a broader process window. Essential dimensions like tolerances should always be identified in your design’s drawing for a proper review.

Surface finish depends on the material, geometry, and functional requirements. Many components are left “as-is” or “as-machined” without more post-production involvement. Some parts need flow-friendly or cleanliness-focused surfaces that simple buffing can do. Others require cosmetic or even optical quality that will need a specialized process like vapor polishing to complete. Finish requirements should be defined early because they affect process selection and cost.

Yes. We routinely evaluate complex geometry, fine features, and multi-axis features that exceed standard machining capability. However, we do not offer 3D printing services. Feasibility depends on the material, size, tolerance, and performance requirements. The full design should be reviewed before moving into production.

The best material depends on the application, media, regulatory requirements, and performance targets. Medical and life science programs often add into the equation by requiring  biocompatibility, dimensional stability, cleanliness, and chemical resistance. To further complicate matters, in some cases, optical clarity or sterilization compatibility is also required. While these plastics won’t meet all specifications, commonly used materials include:

- COC/COP

- PEEK

- Polycarbonate

- Radel®

Chemical resistance depends on the specific fluid, concentration, exposure time, and temperature. No material is universally resistant across all conditions. However, our chemical resistance chart helps you compare the chemical resistance of our most popular plastics to commonly used chemicals in your industry. We also have a chart specifically for the Life Sciences. Our chemical resistance resources can help compare performance across commonly used plastics, and we review the application before suggesting a material.

Wear and load-bearing performance depend on duty cycle, contact conditions, geometry, and environmental exposure. Some plastics are better suited for low-friction movement, while others are selected for strength or dimensional stability. The correct material is the one that best balances performance across the full application.

Regulated material requirements can often be supported depending on the application and selected material family. These requirements should be identified early so material, traceability, and documentation expectations can be aligned. In regulated environments, compliance considerations are part of the manufacturing plan.

While application data is often a useful starting point for material selection, we cannot recommend or suggest a material without knowing other factors like its expected operating environment or seeing an actual design plan. We would then need to know the expected interacting media, load, temperature, geometry, and end-use requirements. The more detail you provide, the more precise a suggestion we could make.

Lead time depends on part complexity, material selection, volume, and whether the project is for prototype or production. Simpler projects may move faster (sometimes in weeks, depending on volume and design complexity), while those with specialized requirements will naturally take longer. If you have a target launch date, sharing it early helps us assess feasibility and timing. The most accurate lead time can be confirmed once we review the project scope.

A CAD/STP file or dimensioned drawing is usually the best starting point for a quote. Clear geometry, material information, and any key tolerances or notes help us understand the design intent more quickly. If you only have a conceptual sketch or early-stage layout, that can still be useful for an initial discussion as we can guide you to design your component for manufacturability.

We typically focus on projects of 500 pieces or more. That volume level supports the engineering effort, process control, and repeatability expected in custom manufacturing. We do not take on one-off work or limited prototype runs that do not have a path to scale. Smaller quantities may be reviewed in limited cases, but they are not our standard focus.

In select cases. We evaluate smaller programs based on technical fit, long-term opportunity, and alignment with our manufacturing model. Our priority is supporting projects with clear production intent and repeatable requirements.

No. We prioritize programs with clear application needs, repeatability, and/or future production potential. One-off work without a broader fit is generally not where we focus.

Yes. Recurring production is often the best situation for both the OEM and its partnering manufacturer. This becomes especially important for long-term supply, consistency, repeatability, and change control. If you expect ongoing demand, it helps to share anticipated volumes, forecast timing, and any essential quality requirements. That makes it easier to evaluate how the program should be supported over time.

No. We specialize in custom bonded manifolds and precision-manufactured fluidic components. Each program is developed around the specific requirements of the application, including geometry, materials, performance targets, and operating constraints. If you are looking for a standard catalog part, we are likely not the right fit.

We maintain quality certifications and documented processes to support regulated and technically demanding applications. We have ISO 9001:2015 registration, which can be downloaded from our About Us page

Our quality systems are designed to support applications where inspection, documentation, and process control matter. For regulated industries, quality expectations should be defined early so the appropriate review, traceability, and verification steps can be aligned with the project.

Start with the application, target performance, and any available drawings or CAD files. That at least gives us a starting point to determine whether the project is a fit and what additional details are needed. Programs with clear requirements move faster and are easier to evaluate. If the design is still developing, that is still a valid starting point. Tap the “Request for Quote” button or the “Contact Us” button to get started now. If you do not hear back from us within 1-3 business days after submitting an inquiry, please check your spam folder and whitelist us in your chosen email provider. Then reach out again at sales at controlledfluidics.com. Thank you!