01
Tolerance held on the drawing, not on the part
The first article measures well, then batch three drifts. By the time incoming inspection catches it, you have scrapped parts, a stalled assembly line and a rework bill nobody budgeted for.
Custom CNC Machining China
Custom CNC Machining China for Metal and Plastic Parts
We machine prototypes and production runs in stainless steel, brass, aluminum and engineering plastics. 127 CNC machines in Dongguan, tolerances to ±0.005 mm, and no minimum order quantity.
±0.005 mm tolerance16 five-axis centersNo MOQISO 9001:2015Quote in 12 hours
15 yearsMachining metal since 2011
127High-precision CNC machines
±0.005 mmAchievable tolerance
3–5 daysTypical part shipping time
Where projects lose time
Four Problems That Show Up on the Shop Floor
Most of these trace back to how the supplier reads your drawing, not to the machine itself.
02
DFM feedback arrives after the tooling is cut
A wall too thin to hold thread depth, a pocket too deep for the cutter you specified. These get caught late, and the fix costs a redesign instead of a phone call.
03
A new supplier means a new paper trail
Material certificates, inspection reports, NDA coverage. If these are not ready before the PO, purchasing burns days chasing documents instead of parts.
04
Small runs get quoted like large ones
You need five pieces for a fit check, not five hundred. Minimum order rules and setup charges turn a quick test into a capital decision.
How we work
Machining Built Around Your Drawing, Not Our Convenience
Three capabilities decide whether a job runs clean: how the part is fixtured, how the cut is planned, and how it is checked before it ships.
Fixture and setup
5-Axis Setup Cuts the Number of Times a Part Moves
Every re-clamp adds error. On a three-axis machine a complex bracket might need four setups, and each one stacks a little more deviation onto the last. Our 16 simultaneous 5-axis centers cut most of those parts in one or two setups.
That matters most on parts with angled faces, deep pockets or features on five sides. Fewer setups also means shorter cycle time, so a part that would take a week on three axes can leave in days.
- 1Ø400 mm rotary tableTrunnion work for round and indexed parts
- 24,000 × 400 × 150 mm travelLong rails and extrusions in one pass
- 316 mill-turn centersTurned and milled features without a second op
Material and finish
Stainless, Brass and Aluminum Behave Differently. We Machine Each One Its Own Way.
303 stainless cuts freely and takes a good finish, which is why it suits shafts and fittings. 316L work-hardens if the feed is too light, so we run it heavier and keep the tool engaged. 17-4PH in the H900 condition needs carbide and patience.
Brass C36000 machines fast and holds tight tolerances well, but it is not the answer when the part sees salt water. Aluminum 6061-T6 is light and cheap to run, though thin walls deflect if you push the feed. We pick the grade with you before the first chip.
Plastics bring their own rules. POM and PEEK hold dimension; ABS and HDPE move with heat. We adjust speeds and clamping pressure rather than treat them like soft metal.
- 1Ra 0.8–1.6 μm standardRa 0.2–0.8 μm when the drawing calls for it
- 2Anodizing and platingClear, hardcoat, nickel, zinc, silver and gold
- 3Laser markingMinimum character height 1.5 mm
Choosing a grade
Which Material Fits Which Job
A short guide for the common cases. If your part sits between two rows, send the drawing and we will say which one we would run.
| Material | Good for | Watch out for |
|---|---|---|
| 303 stainless | Shafts, fittings, fast turnarounds | Lower corrosion resistance than 316 |
| 316L stainless | Marine, medical, chemical contact | Work-hardens if feeds are light |
| 17-4PH (SUS630) | High-strength aerospace parts | Needs carbide and slower passes |
| Brass C36000 | Connectors, valves, tight tolerances | Not for salt-water service |
| Aluminum 6061-T6 | Enclosures, brackets, heatsinks | Thin walls deflect under heavy feed |
| Aluminum 7075 | Aerospace structural parts | Harder on tooling than 6061 |
| POM / PEEK | Insulators, bushings, wear parts | Heat growth needs coolant care |
| Titanium TC4 | Lightweight, high-load components | Slow cutting, higher cost per part |
What we run
Services Under One Roof
Machining is the core. Everything around it is here so your part does not bounce between vendors.
01
5-Axis CNC Machining
Complex geometry in one or two setups. Angled faces, deep pockets and five-sided features without stacking fixture error.
02
CNC Milling and Turning
Three-, four- and five-axis mills plus 16 mill-turn centers. Turned features and milled flats on the same part.
03
Rapid Prototyping
One-off parts for fit checks and design reviews. No minimum order, so you can test before you commit to a run.
04
Sheet Metal Fabrication
Brackets, panels and chassis work that pair with machined components on the same assembly.
05
Surface Finishing
Anodizing, plating, powder coating, bead blasting and laser marking. Finish and marking held to your spec.
06
Die Casting and Vacuum Casting
For volumes where machining every part stops making sense. We will tell you when the crossover happens.
Machine range
Capacity at a Glance
Machine count and travel decide what fits. Here is what we can take without sending work out.
| Machine type | Count | Travel or size |
|---|---|---|
| Simultaneous 5-axis centers | 16 | Up to 4,000 mm processing size |
| Four-axis mills | 12 | 750 × 1,150 × 550 mm |
| Three-axis machines | 27 | 600 × 600 × 600 mm |
| Mill-turn centers | 16 | Ø400 mm rotary table |
| Total CNC machines | 127 | 3 wholly-owned plants, 7,600 m² |
| Tolerance | — | ±0.005 mm (±0.0002 in) |
Why engineers stay
What We Actually Control
No slogans. These are the numbers and habits that decide whether your next order runs like the last one.
15Y
Machining since 2011
Fifteen years of metal cutting in Dongguan, with a second plant in Singapore for regional supply.
±0.005
Tolerance we hold
Down to five microns on the features that need it. We will say when your drawing asks for more than the process can give.
99.99%
Qualification rate
Parts that pass inspection on the first submission, tracked across production runs.
12 h
Quote and DFM
Drawing in, quotation and free DFM analysis back within 12 hours. Production can start within 24 hours.
100%
Inspection before shipment
Raw material check, in-process monitoring and final inspection. Reports on request.
1 pc
No minimum order
From a single prototype to 10,000+ part runs on the same drawing.
7,600 m²Manufacturing space
150Technicians on staff
3Wholly-owned plants
< 2%Historical late-delivery rate
Where these parts go
Industry Requirements and What We Deliver
Aerospace brackets and housings
Thin-wall aluminum and titanium parts where weight and stiffness both matter.
- ±0.005 mm
- 5-axis
- 17-4PH / TC4
Automotive and EV fixtures
Grippers, test rigs and motor housings run to IATF 16949 process controls.
- IATF 16949
- 10,000+ runs
- PPAP-ready
Medical device components
316L and PEEK parts with clean finishes and full inspection records.
- ISO 13485
- Ra 0.2–0.8 μm
- 100% inspection
Industrial automation parts
One-off end effectors through to repeat production batches.
- No MOQ
- 3–5 day shipping
- Anodized
FAQs
Questions Engineers Ask Before the First Order
What file formats do you need for a quote?
STEP and IGES cover most jobs. X_T and native SolidWorks files also work. For simpler parts, a 2D PDF with clear dimensions is enough.
If you only have a sketch, send it with the function of the part. We will tell you what is missing before we quote.
How tight a tolerance can you actually hold?
±0.005 mm is achievable on the features that need it, and that is the number we quote against. On a 4,000 mm part, temperature and material movement matter more than the machine.
If your drawing calls for tighter than ±0.005 mm over a long span, we will say so and suggest a different approach rather than take the order and miss it.
Which materials do you machine most often?
Stainless 303, 304, 316L and 17-4PH; aluminum 6061-T6, 7075 and 6082; brass C36000 and C28000; plus titanium TC4, Inconel and engineering plastics like POM, PEEK and HDPE.
We stock common grades and can source others against your material certificate requirements.
Is there a minimum order quantity?
No. We run from a single prototype up to 10,000+ part runs. The setup cost is the same either way, so a one-piece order is quoted honestly rather than padded.
For a fit check, a single machined part is often cheaper than waiting for a tooling decision.
How fast can I get parts?
Quotation and free DFM analysis come back within 12 hours. Production can start within 24 hours of approval, and most parts ship in 3–5 days.
That timeline assumes the drawing is released and material is in stock. We will flag it if either is not true.
How do you handle confidentiality?
Uploads are secure and confidential. We sign NDAs on request and can work under yours if you have a standard form.
We do not publish customer names, part photos or case details without written approval.
What inspections and reports come with the parts?
Every order gets raw material verification, in-process monitoring and 100% final inspection before shipment.
Inspection reports, material certificates and dimensional data are available on request. Say what you need with the PO so it ships with the parts.
When should I switch from machining to casting?
Machining wins when geometry changes, when tolerances are tight, or when the volume is low. Casting starts to pay off when the shape is stable and annual volume is high.
We run both, so we will tell you where the crossover sits for your part instead of pushing one process.
Send the Drawing. Get a Quote and DFM Notes in 12 Hours.
Upload your files and an engineer reviews the part before we price it. No minimum order, no obligation.
12-hour quoteFree DFM analysis100% inspectionNo minimum orderNDA on request
