01
The drawing says general tolerance
Then the mating bore lands at the loose end of the band and the assembly needs shimming. A feature that drives fit should carry its own callout, not a blanket note in the title block.
Industries We Serve
Manufacturing Applications: One Shop, Seven Industries
We machine parts for aerospace, automotive and EV, medical, robotics, electronics, industrial machinery and new energy. The cutting is similar. What changes is which features get inspected, what must be traceable, and which process control your auditor opens.
±0.005 mm tolerance16 five-axis centers127 CNC machinesISO 9001 / IATF 16949 / ISO 13485No minimum orderNDA on request
150Technicians across 3 plants
7,600 m²Manufacturing space
4,000 mmMaximum part envelope
99.99%Qualification rate
Where Applications Go Wrong
Does Any of This Sound Familiar?
Most application problems do not show up at the spindle. They show up later, in a rejected lot or a stalled audit.
02
First article passes, production drifts
A process that is not monitored between setups will walk. On a 10,000 part run a small thermal shift becomes a full lot of out-of-round bores. In-process checks catch it at part 200, not part 2,000.
03
Nobody can trace the material
Aerospace and medical auditors ask for the heat number, the mill certificate and the inspection record for one specific part. Without a documented route from raw bar to finished part, the audit stops there.
04
The quote took two weeks
Design reviews move faster than that. If DFM feedback arrives after the design is frozen, the only options left are expensive ones. We return a quote and a free DFM review within 12 hours.
How We Handle Each Application
Same Machines, Different Control Plan
The workholding, the tooling and the inspection plan are set by the industry, not by the machine.
Aerospace and New Energy
Thin walls, tight bores, documented material
Aerospace frames and new energy housings share a problem: removing material from a part that wants to move. We rough with the stock left heavy, stress relieve where the material allows, then finish in a single five-axis setup so the datum never changes mid-process.
Every batch carries its material certificate and inspection record. Dimensions down to ±0.005 mm and finishes to Ra 0.2–0.8 μm are checked on the same report that ships with the parts.
- 1One setup for critical featuresFewer datums means less stack-up error on bores and faces.
- 2Material traceabilityHeat number and mill certificate travel with the lot.
- 3Titanium and InconelTC4, TA1, TA2 and Inconel cut with the feeds those alloys need.
Automotive, EV and Medical
Volume runs and clean, burr-free edges
Automotive and EV programs move from a prototype housing to a 10,000 part run without changing shops. IATF 16949 process control covers the SPC records and the reaction plan when a dimension trends. That is what keeps a stator or rotor bore consistent across a long run.
Medical work runs under ISO 13485. Edges get radiused, internal corners get deburred, and cleaning follows a written sequence. Parts arrive with the surface finish and the inspection report the file calls for.
- 1Mill-turn for round parts16 mill-turn centers keep concentric features in one operation.
- 2Stator and rotor workLaminations, housings and shafts machined to matched fits.
- 3Documented cleaningWritten deburr and clean steps for implant and device parts.
Choosing the Right Route
Which Application Matches Your Part
Use this to pick the industry page that fits, or send the file and we will tell you which route applies.
| Industry | Typical parts | What drives the process |
|---|---|---|
| Aerospace | Brackets, frames, housings | Traceability, thin-wall control |
| Automotive & EV | Motor housings, shafts, brackets | Volume consistency, SPC records |
| Medical Devices | Instrument bodies, housings | Cleanliness, edge condition |
| Robotics & Automation | Joint housings, end effectors | Repeatability across units |
| Electronics | Enclosures, heat sinks, panels | Cosmetic faces, flatness |
| Industrial Machinery | Plates, gears, machine frames | Size, rigidity, cost per part |
| New Energy | Battery and drive components | Flatness, coating adhesion |
Services
What We Can Run for Your Program
One shop from prototype to production, so the process does not have to be re-qualified at a second vendor.
01
5 Axis CNC Machining
16 simultaneous five-axis centers for contoured surfaces, angled holes and parts that need one setup.
02
4 Axis and 3 Axis Milling
39 mills for prismatic parts, plates and housings where three or four axes do the job at lower cost.
03
CNC Milling & Turning
16 mill-turn centers handle round parts with cross features in a single cycle.
04
Rapid Prototyping
Machined and printed prototypes for fit checks before tooling is committed.
05
Sheet Metal Fabrication
Brackets, chassis and panels when the part is better formed than cut from solid.
06
Die Casting and Vacuum Casting
Tooling and cast routes when volumes make machining from billet uneconomical.
Scope
What a Typical Order Includes
| Item | What we provide | Notes |
|---|---|---|
| Materials | Aluminium, stainless, steel, copper, titanium, plastics | 6061-T6, 316L, 17-4PH, TC4, PEEK and others |
| Tolerance | ±0.005 mm where called out | Capability, not a default for every dimension |
| Surface finish | Ra 0.2–3.2 μm depending on the feature | Fine finishes cost more machine time |
| Finishing | Anodizing, plating, powder coat, blasting | Laser marking from 1.5 mm character height |
| Inspection | 100% before shipment, reports on request | Raw material, in-process and final checks |
| Order size | One prototype to 10,000+ parts | No minimum order quantity |
Why GreatLight
The Numbers Behind the Work
Fifteen years in Dongguan and Singapore, and a machine list that covers small precision parts and large frames.
15Y
Machining since 2011
Three wholly-owned plants and 150 technicians. The same team quotes, programs and inspects.
127
CNC machines on the floor
16 five-axis, 12 four-axis, 27 three-axis and 16 mill-turn centers. Routing stays in-house.
±0.005
Millimeters of tolerance
Held on critical features and verified on the inspection report that ships with the lot.
12h
Quote turnaround
A price and a free DFM analysis come back within 12 hours of receiving the file.
24h
To production start
Once the order is confirmed, machining can begin within 24 hours.
3–5d
Typical ship window
Most parts ship in 3 to 5 days. Historical late-delivery rate is under 2%.
ISO 9001Quality management
IATF 16949Automotive process control
ISO 13485Medical device quality
ISO 27001Information security
What We Deliver
Requirements We Meet by Industry
Medical device housings
Runs under ISO 13485 with documented deburr and cleaning steps.
- ISO 13485
- Ra 0.8–1.6 μm
- Full traceability
Automotive volume parts
SPC records and a written reaction plan keep long runs on dimension.
- IATF 16949
- 10,000+ parts
- SPC records
Robotics joint housings
Matched bores and faces held so units interchange without fitting.
- ±0.005 mm
- Repeatable fits
- 5-axis single setup
Electronics enclosures
Cosmetic faces finished and masked before anodizing or coating.
- Ra 0.2–0.8 μm
- Masked finishing
- Flatness held
FAQs
Questions Engineers Ask Us
We make parts for two industries. Does the process change?
The cutting parameters often do not change much. The inspection plan does.
An automotive part may need SPC records and a reaction plan. A medical part may need documented cleaning and edge control. We build the control plan around the strictest requirement the part carries, then apply it to the whole run.
How do you decide between five-axis and three-axis?
It comes down to how many setups the part needs and whether the critical features can be reached without moving it.
If a bore, a face and an angled hole all share one datum, five-axis usually wins because the part stays put. Simple prismatic plates are cheaper on a three-axis machine. We quote the route that holds the tolerance at the lower cost.
What do you need to quote a part?
A 3D model or a dimensioned drawing, the material, the quantity and any finish or inspection requirement.
If the file is missing a callout that drives fit, we flag it in the DFM note rather than guessing. Quotes and DFM feedback come back within 12 hours.
Can you keep a prototype and a production run consistent?
Yes. We run both from the same program family and the same inspection plan.
The prototype proves the process. When volume rises, the tooling and fixtures carry over, so the first production lot matches the sample that was approved.
What inspection documentation ships with the parts?
Every order is inspected 100% before shipment. Raw material, in-process and final checks are recorded.
Dimensional reports, material certificates and first article reports are available on request. If your auditor needs a specific format, tell us at the quote stage.
Do you handle small orders?
There is no minimum order quantity. We machine one prototype or a 10,000 part run.
Small runs use the same machines and inspection as large ones. The per-part price is simply higher because setup is spread over fewer pieces.
How do you protect our design data?
Uploads are secure and confidential. We hold ISO 27001:2022 for information security.
An NDA is available on request, and it can be signed before you send any files.
What is the largest part you can machine?
Up to 4,000 mm, with a 4,000 × 400 × 150 mm travel on our large machines.
Smaller work runs on 750 × 1,150 × 550 mm and 600 × 600 × 600 mm centers, down to 500 × 500 × 450 mm for compact parts. A Ø400 mm rotary table covers round features on large work.
Tell Us What You Are Building
Send the model and the requirement. You get a price, a DFM review and a route recommendation within 12 hours.
12-hour quote100% inspectionNo minimum orderNDA on request
