CNC machining that lands on your dock in 3–7 days.
3, 4 and 5-axis milling. Conventional and Swiss turning. 40+ production-grade materials. Tolerances as tight as ±0.01 mm . Inspection reports included. MOQ = 1.
CNC machine
Our Wuxi machining floor runs 24 hours across three shifts, with dedicated cells for prototyping, production and precision grinding. Equipment is grouped by job profile so your part runs on the machine best suited for its geometry — not whichever is available.
The machines that make it possible.
3-Axis Milling
Fast turnaround on standard prismatic parts. Brackets, plates, fixtures.
4-Axis Milling
Indexing around a single axis — shafts, blocks with features on 4 sides.
5-Axis Milling
Complex 3D contours, aerospace and medical, impellers, turbine blades.
CNC Lathes
Shafts, bushings, adapters, round parts with concentric features.
Swiss Lathes
Small turned parts, medical pins, connectors, high-volume precision.
Surface Grinding
Finish-grind tolerances below 0.005 mm. Hardened steel, tool inserts.
EDM (Wire & Sinker)
Sharp inside corners, hardened materials, mold cavities, small slots.
CMM Inspection
Dimensional verification of every precision batch before shipment.
Key data
- Brands
- Haas VF-2 · VF-4
- Travels
- 760 × 508 × 508 mm
- Accuracy
- ±0.025 mm
- Brands
- Haas + HAAS TRT
- Travels
- 1,020 × 510 × 635 mm
- Accuracy
- ±0.02 mm
- Brands
- DMG MORI DMU 50/80
- Travels
- Ø 650 × 560 mm
- Accuracy
- ±0.01 mm
- Brands
- Doosan · Okuma
- Travels
- Ø 450 × 1,500 mm
- Accuracy
- ±0.015 mm
- Brands
- Citizen L20 / L32
- Travels
- Ø 32 × 320 mm
- Accuracy
- ±0.005 mm
- Brands
- Okamoto
- Travels
- 600 × 300 mm
- Accuracy
- Ra 0.2 µm
- Brands
- Mitsubishi · Sodick
- Travels
- 500 × 300 × 200 mm
- Accuracy
- ±0.003 mm
- Brands
- Zeiss · Hexagon · Mitutoyo
- Travels
- 1,000 × 700 × 600 mm
- Accuracy
- 0.8 µm
Our Wuxi machining floor runs 24 hours across three shifts, with dedicated cells for prototyping, production and precision grinding. Equipment is grouped by job profile so your part runs on the machine best suited for its geometry — not whichever is available.
40+ CNC-grade materials in stock.
Metals
Engineering Plastics
| Material | Density | Yield (MPa) | Typical use |
|---|---|---|---|
| Al 6061-T6 | 2.70 g/cc | 276 | General aerospace, automotive |
| Al 7075-T6 | 2.81 g/cc | 503 | High-strength aerospace, tooling |
| Al 2024-T3 | 2.78 g/cc | 324 | Aircraft structural |
| SS 304 | 8.00 g/cc | 215 | Food, general corrosion resistance |
| SS 316L | 8.00 g/cc | 205 | Medical, marine, chemical |
| SS 17-4 PH | 7.75 g/cc | 1,100 | Aerospace, pump shafts |
| Steel 4140 | 7.85 g/cc | 655 | Shafts, fasteners, tooling |
| Tool steel D2 | 7.70 g/cc | 1,900 | Punch, die, cutting tools |
| Titanium Gr.5 | 4.43 g/cc | 828 | Implants, aerospace, racing |
| Brass C360 | 8.50 g/cc | 310 | Connectors, fittings |
| Copper C110 | 8.94 g/cc | 195 | Electrical, heat sinks |
| Inconel 718 | 8.19 g/cc | 1,036 | Hot-section aerospace |
| Material | Density | Tensile (MPa) | Typical use |
|---|---|---|---|
| ABS | 1.05 g/cc | 42 | Enclosures, prototypes |
| Polycarbonate | 1.20 g/cc | 65 | Transparent parts, lenses |
| Nylon PA6 | 1.14 g/cc | 80 | Gears, wear parts |
| Nylon PA66-GF30 | 1.36 g/cc | 150 | High-strength brackets |
| Delrin / POM | 1.41 g/cc | 70 | Gears, bearings, cams |
| PEEK | 1.32 g/cc | 100 | Aerospace, medical, semiconductor |
| Ultem / PEI | 1.27 g/cc | 85 | Aerospace, high-temp electrical |
| PTFE / Teflon | 2.20 g/cc | 21 | Seals, gaskets, chemical |
| PMMA / Acrylic | 1.18 g/cc | 72 | Optical, displays, signage |
| HDPE | 0.96 g/cc | 26 | Chemical tanks, bottles |
| PVC | 1.38 g/cc | 52 | Chemical, plumbing |
| G10 / FR4 | 1.80 g/cc | 260 | Electrical insulation |
Common alloys are in continuous stock at our Wuxi warehouse. Specialty materials — Inconel, magnesium, ceramics, PEEK-CF — are procured within 3–5 days from certified mill suppliers with 3.1 certificates.
Tolerance you can defend in a design review.
Standard
Typical for most prototypes and non-critical features. Default if no tolerance is specified on the drawing.
Precision
Standard for aerospace, medical and high-quality industrial. 5-axis milling or Swiss turning.
High Precision
Precision mating surfaces, bearing seats, alignment features. Often requires grinding or EDM.
Ground/EDM
Precision ground diameters, flatness below 0.005 mm, EDM slots with 0.003 mm wire position.
Every tolerance class below is backed by real measurements, not marketing. Parts in our top tier (High Precision) are shipped with a CMM report showing actual deviations on every callout.
A practical note: tighter tolerances cost more and take longer. We'll flag tolerances on your drawing that aren't serving a functional requirement — and often save you money by opening them up.
Design for CNC — a practical guide.
Internal radii
Use the largest internal radius possible. Corners smaller than 0.8 mm require EDM or tiny end mills — expensive and slow.
Deep pockets
Depth-to-width ratio above 4:1 requires long end mills with chatter and deflection risk. Design pockets 3:1 or shallower.
Thin walls
Walls below 0.8 mm (metal) or 1.5 mm (plastic) deflect under cutting forces. Keep walls ≥ 1.0 mm metal, ≥ 2.0 mm plastic.
Threads
Tap threads have limits: depth should be 1.5–3× thread diameter. Use thread inserts (Helicoil) for frequent assembly or aluminum threads.
Tolerance zones
Only apply tight tolerances where they matter. Every ±0.01 mm callout adds ~$30–80 to the part cost. Default features should use ISO 2768-m.
Five high-impact rules that will save you money and lead time on almost every CNC part. All five get flagged automatically in our free DFM review.
Where PifyC CNC parts ship.
Aerospace
Medical Devices
Automotive & EV
Robotics
Semiconductor
Consumer Electronics
A snapshot of the industries and part types that pass through our machining floor every month.
From STEP file to shipping box.
CAD upload & DFM
Upload STEP/IGES/STL. Engineer reviews wall thickness, tolerances, accessibility within 24 h. NDA signed on request.
CAM programming
Toolpaths programmed in Mastercam / Fusion. Fixture designed. Operator sheet prepared. Stock ordered if non-standard.
Machining & QA
First article inspected, then batch run. In-process checks every 5th part on precision jobs. Final CMM verification.
Finish, pack, ship
Deburr, finish, clean. Individually wrapped. DHL/FedEx/UPS Express. Tracking sent. Full inspection report included.
Related services
CNC machining that lands on your dock in 3 — questions
What CNC machining services does PifyC offer?
PifyC provides 3-axis, 4-axis and 5-axis CNC milling, CNC turning on conventional and Swiss-type lathes, mill-turn machining, surface grinding, wire and sinker EDM. We operate 40+ CNC centers across a 2,400 m² machining floor in Wuxi.
What is the tightest tolerance PifyC can hold?
Standard tolerances are ±0.1 mm (ISO 2768-m) for general features and ±0.025 mm (ISO 2768-f) for precision features. With 5-axis machining plus grinding we routinely hold ±0.01 mm on critical dimensions. Concentricity to 0.005 mm and flatness to 0.005 mm are achievable on ground surfaces. Every tight-tolerance part is CMM-verified before shipment.
What materials can you CNC machine?
40+ production materials including: Aluminum (6061, 7075, 2024, 5052), Stainless Steel (303, 304, 316L, 17-4 PH), Alloy Steel (4140, 4340, A2, D2, H13), Titanium (Grade 2, Grade 5), Brass (C360, C260), Copper (C110), Bronze, Inconel 625/718, Magnesium, PEEK, Delrin, Nylon, Polycarbonate, ABS, PTFE, Ultem, PMMA and more. Mill certificates (EN 10204 3.1) provided on request.
What is the maximum part size you can machine?
Our largest CNC envelope is 1200 × 800 × 600 mm on vertical machining centers. For turning, maximum diameter is 450 mm with length up to 1500 mm. Larger parts can be handled via fixturing or sub-assembly approach — consult our engineering team for parts exceeding these dimensions.
How fast can you deliver CNC machined parts?
Standard lead time is 3–7 business days for prototypes and small batches (1–50 pieces). Rush service at 72 hours available on request for simple parts. Production runs of 100–1,000 parts typically ship in 10–15 days. Lead time excludes international shipping (add 3–5 days via DHL/FedEx Express).
Do you provide first-article inspection (FAI) reports?
Yes. FAI reports using AS9102 format are included at no charge for aerospace and precision batches. Reports cover every dimension on the drawing with measured values, tolerance zones and CMM-generated deviation maps. PPAP packages (levels 2, 3 or 4) available on request for automotive customers.
What CAD file formats do you accept for CNC?
Preferred: STEP (.step/.stp), IGES (.iges/.igs), Parasolid (.x_t). Also accepted: SolidWorks (.sldprt), Pro/E or Creo (.prt), CATIA (.catpart), Inventor (.ipt), STL for reference. For critical features, include a 2D PDF drawing with GD&T callouts, tolerances, finish requirements and material spec.
Can you machine low-volume production runs?
Yes — CNC is ideal for production runs of 10 to 1,000 parts per SKU. We offer dedicated production cells for repeat orders, with lot-level traceability and first-article inspection on every batch. For volumes above 10,000 parts of plastic geometry, we can help you evaluate migration to injection molding.
What surface finishes are available on CNC parts?
As-machined (Ra 3.2 µm standard, Ra 1.6 µm fine, Ra 0.8 µm polished), bead-blasted (matte uniform), anodized Type II and Type III, powder coated, electroplated (nickel, chrome, zinc), passivated (stainless), black oxide, brushed, polished (up to SPI-A1 mirror), laser etched and silk screen printed. All finishes managed in-house or through long-term vetted partners under our QA.
Do you sign NDAs for proprietary CAD files?
Yes. A mutual NDA is signed before opening any customer CAD file on request. Our standard NDA template is available on request, and we can sign your version if it does not conflict with Chinese export law. All customer IP and tooling are owned exclusively by the customer.
Keep reading
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Read more →Send a CAD file. Get an engineering-reviewed quote.
No minimum quantity, free DFM feedback from a senior manufacturing engineer, and an NDA signed before file review on request.