We machine, print and cast plastic parts from ABS to PEEK, holding the same tolerances we hold in metal. Send a drawing and get a quotation with free DFM analysis within 12 hours.
A general-purpose grade like PP or HDPE gets quoted because it is cheap, then the part creeps under load at 60 °C, or the boss strips on the first assembly. Re-cutting in POM or PA costs a second setup, a second fixture and another week.
Thick sections on a machined plastic part hold internal stress. They bow after the last facing cut, so the flatness measured on the machine no longer matches the flatness at goods-in. Thin walls under 0.8 mm deflect instead of cutting.
A ±0.02 mm bore in unfilled PA is unrealistic. The material moves with humidity and heat. We often see a drawing that needs three dimensions tightened and the rest opened up, which nobody flags until the first article fails.
A cosmetic gloss on a cast or printed housing can be buffed, but the same callout on a machined PEEK part shows every tool mark. Surface finish depends on the grade, the cutter path and the wall stiffness, not on the drawing note.
Two decisions drive cost and function on every plastic part: which polymer, and which process makes the geometry.
General-purpose plastics cover most consumer housings and covers. PE, PP, PVC, PS and ABS are cheap, mold well and take a wide range of colors. Engineering grades carry real load: PA and POM for gears and bushings, PC for impact-resistant transparent covers, PTFE for low friction and chemical resistance, PEEK for high temperature and sterilization.
Before we quote, we ask which properties can be relaxed. A bracket that only needs stiffness can run in a cheaper grade with a thicker rib. A part that sees steam cycles or repeated autoclave exposure cannot, and no redesign will fix that.
CNC machining suits tight bores, flat sealing faces and small to medium volumes. It holds ±0.005 mm where the material allows and leaves a clean, weld-free surface. Custom 3D printing wins on internal channels and lattice geometry that a cutter cannot reach, and it needs no tooling. Vacuum casting covers low-volume housings with a molded look.
The trap is using one process for everything. A printed part with a critical bore will need reaming. A machined part with a deep internal channel may cost more than a printed one. We route the job to the process that makes the feature, not the whole part.
Typical values for unfilled grades. Filled and blended versions change the numbers.
| Grade | Good for | Watch out for |
|---|---|---|
| ABS | Housings, covers, fixtures | UV exposure, solvents |
| PC | Impact covers, guards | Stress cracking, cost |
| PA (Nylon) | Gears, bushings, clips | Moisture swell, creep |
| POM | Precision gears, slides | Acid attack, bonding |
| PEEK | High temp, medical, aerospace | Cost, tool wear |
| PTFE | Low friction, chemical seals | Creep, hard to bond |
3-, 4- and 5-axis milling and turning of ABS, PC, PMMA, POM, PA, PEEK, PP, HDPE and carbon fibre. Tolerances to ±0.005 mm, finishes from Ra 0.2 to 3.2 μm.
One-off functional prototypes and fit checks. Same machines and fixtures as production, so what you approve is what ships.
Internal channels, lattice structures and organic shapes that cannot be cut. Good for early form studies and low-volume functional parts.
Silicone tooling from a master pattern for 10 to 200 cosmetic and functional parts. Useful when a housing needs a molded skin.
Metal frames, brackets and enclosures that pair with plastic covers. One supplier for the whole assembly, one inspection report.
Bead blasting, tumbling, brushing and polishing for plastic. Laser marking with a minimum character height of 1.5 mm.
| Item | Detail | Notes |
|---|---|---|
| Maximum part size | 4,000 mm | Larger parts split and assembled |
| Tolerance | ±0.005 mm | Grade and geometry dependent |
| Fine finish | Ra 0.2–0.8 μm | Polishing on request |
| As-machined finish | Ra 1.6–3.2 μm | Default for functional parts |
| Order quantity | 1 to 10,000+ | No minimum order quantity |
| Inspection | 100% before shipment | Material, in-process, final |
| Reports | On request | Dimensional and material |
Fifteen years of cutting plastics and metals in Dongguan, with a second plant in Singapore.
Sixteen simultaneous 5-axis centers, twelve four-axis mills, twenty-seven three-axis machines and sixteen mill-turn centers.
Held on plastic grades that allow it, verified with in-process monitoring and a final inspection before packing.
Quotation and free DFM analysis within 12 hours. Production can start within 24 hours of approval.
Raw material check, in-process monitoring and 100% inspection before shipment on every order.
ISO 9001:2015, IATF 16949:2016, ISO 13485:2016 and ISO 27001:2022 cover quality, automotive, medical and data security.
Under-hood covers and connector housings need heat resistance and stable fit over thousands of cycles.
Instrument housings and fluid path parts need clean surfaces, no voids and traceable material.
Insulating brackets and enclosures need flat sealing faces and consistent wall thickness.
Wear pads, gears and guides need low friction and dimensional stability under continuous load.
Yes, on grades with low moisture absorption and good stiffness, such as POM, PEEK and filled PA. The cut itself is not the limit; the material is.
Unfilled PA and PP move with humidity and temperature, so a tolerance that tight will not survive a week in a warehouse. We flag those dimensions during DFM review and propose a workable number.
Choose plastic when you need electrical insulation, chemical resistance, low weight or a non-marring surface. It often cuts part cost as well.
Stay with aluminium when the part carries high point loads, sees continuous temperatures above the plastic's limit, or needs a thread that will be assembled many times.
POM is the default for gears, slides and bushings. It has low friction, good stiffness and machines cleanly.
Move to PA or PEEK when the part also sees high temperature or chemicals. PTFE is the choice for the lowest friction and the widest chemical resistance, but it creeps, so it needs support.
Yes. Filled grades are stiffer and hold tolerance better than unfilled ones.
They also wear tooling faster and can leave a rough surface. We adjust feeds, speeds and cutters, and we check the finished surface rather than assume it.
There is none. One prototype and a 10,000-part run go through the same process, the same fixtures and the same inspection.
Small runs often make sense in plastic because tooling is not required for machining or printing.
Uploads are secure and confidential. We can sign an NDA before you send files.
We can also quote from a simplified model or a marked-up drawing if you prefer to keep the full geometry internal.
As-machined surfaces land between Ra 1.6 and 3.2 μm. Bead blasting or tumbling evens out tool marks.
Polishing can reach Ra 0.2 to 0.8 μm on grades that polish well, such as PC and acrylic. PEEK and filled grades stay rougher no matter how much time you spend.
Quotation and free DFM analysis come back within 12 hours. Production can start within 24 hours of approval, and parts typically ship in 3 to 5 days.
Large parts up to 4,000 mm or heavy finishing add time. We tell you the real date in the quote, not after the fact.
Upload a drawing or a model. We reply with a price, a process recommendation and a DFM note within 12 hours.
12-hour quote100% inspectionOne part to 10,000+NDA on request
Trusted by engineers and manufacturers worldwide
Upload your 3D model or 2D drawing and get a quotation with a free DFM analysis. Maximum processing size 4,000 mm.
CNC Metals 13 grades
CNC Plastics 10 grades
Machines & processes 12 options
Surface & post-processing 10 options
Material: not selected Machine: not selected Post-process: not selected
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