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COVID Case Study Series · Part 2

COVID Case Study: Digital Tools for CNC Parts

When travel stopped in 2020, machined parts still had to ship. This page covers the digital tools we use to quote, review and inspect parts without a plant visit.

3 wholly-owned plants±0.005 mm tolerance100% inspectionNo minimum order quantityNDA on request
CNC Machining Services Online
2011Manufacturing since
127High-precision CNC machines
±0.005 mmAchievable tolerance
12 hQuote and free DFM analysis
Where it breaks

What Went Wrong When Everyone Went Remote

Four failures we saw across buyer-supplier relationships in 2020. Each one costs time you cannot bill.

01

Quotes arrived as unreadable scans

A PDF with handwritten dimensions and no model meant two engineers interpreting the same drawing differently. Clarification emails ran for days before a price existed.

02

DFM feedback came after tooling was ordered

A 2 mm wall on an aluminium housing, a hole 0.4 mm from a bend. Problems found after cutting meant a scrapped setup, a new lead time, and a schedule slip nobody could absorb.

03

Nobody could walk the shop floor

Buyers normally confirm a supplier by standing at the machine. With travel closed, purchase orders went out on reputation alone. First articles then revealed spindle capacity, fixture quality and whether the tolerance call was realistic.

04

Inspection reports sat in someone's inbox

A CMM report as a phone photo is not a record. Without a shared folder and a revision number, a dimensional question three months later had no traceable answer.

How we ran it

Digital Tools That Replaced the Plant Visit

Three workflows, each tied to a step where a physical visit used to be the only proof.

CNC Lathe Technical Specifications Terminology
Step 1 · Quote and DFM

Upload a STEP File, Get a Price and a DFM Note

Every enquiry starts with the same channel: a 3D model, a 2D drawing, a material call and a quantity. We return a quotation and a free DFM analysis within 12 hours. No travel, no site meeting.

The DFM note is the part buyers actually read. It lists thin walls, deep pockets, tight corner radii, thread depth, and any feature that needs a second setup. If a tolerance of ±0.005 mm is not needed on a cosmetic face, we say so and the price drops.

  • 1
    Accepted formatsSTEP, IGES, X_T, STL, DWG, DXF, PDF
  • 2
    What we returnUnit price, lead time, DFM note, material options
  • 3
    TurnaroundQuotation and free DFM analysis within 12 hours

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GreatLight Metal new factory building
Step 2 · Production visibility

Shared Folders and Scheduled Video Reviews

Programmers, machinists and quality engineers worked from one shared folder per job. Model revisions, setup sheets, tool lists and inspection plans all carry the same revision letter. If a customer changes a hole diameter on Tuesday, the shop sees it Tuesday.

We ran short daily video calls instead of long status emails. A 10-minute screen share of a toolpath or a first-article measurement resolves in one call what used to take a day of back-and-forth. Remote engineers can watch a cut without booking a flight.

  • 1
    Daily touch baseShort stand-up per job, not a weekly report
  • 2
    Revision controlOne folder per job, one revision letter
  • 3
    On-the-spot answersScreen share a toolpath or a CMM result

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Tool selection

Which Tool Fits Which Job

Match the communication channel to the decision being made.

Job situationTool we useWhy
New part, no drawing yetVideo call plus screen shareFaster than writing a spec from scratch
Complex geometry, tight toleranceSTEP upload and DFM noteGeometry is unambiguous in a model
Running production, small changeShared folder with revision letterEveryone reads the same revision
First article reviewCMM report in shared folderTraceable, not a phone photo
Surface finish questionPhoto plus sample packFinish is easier to see than describe
Capacity or lead time checkInstant message plus live scheduleAnswers in minutes, not a day
What we machine

Services Behind the Digital Front End

The same quoting and review workflow feeds every process below.

01

5 Axis CNC Machining

16 simultaneous 5-axis centers for impellers, brackets and contoured housings that would need three setups on a 3-axis machine.

02

CNC Milling and Turning

27 three-axis machines, 12 four-axis mills and 16 mill-turn centers for prismatic and round parts in one order.

03

Rapid Prototyping

One-off and low-volume parts for fit checks before committing to a production run. No minimum order quantity.

04

Sheet Metal Fabrication

Enclosures, panels and brackets with laser cutting, bending and hardware insertion.

05

Custom 3D Printing

SLA, SLS and FDM for jigs, fixtures and early form studies.

06

Surface Finishing

Anodizing, plating, powder coating, bead blasting and laser marking, applied in-house or through qualified partners.

Scope

Machining Scope at a Glance

Numbers our engineers work to when a job is quoted.

ItemCapabilityNote
Machines127 high-precision CNC machinesAcross 3 wholly-owned plants
5-axis centers16 simultaneousContoured and multi-face parts
Largest travel4,000 × 400 × 150 mmLong parts, single setup
Standard travel750 × 1,150 × 550 mmMost enclosures and plates
Tolerance±0.005 mm±0.0002 in
Surface finishRa 0.2–0.8 μm fineRa 0.8–1.6 μm standard
MaterialsAluminium, stainless, steel, titanium, plasticsGrades listed on the quote
Inspection100% before shipmentReports on request
Why GreatLight

What the Digital Workflow Rests On

Software is only useful when the shop behind it can hold the tolerance.

15Y

Machining since 2011

Fifteen years of production work across aerospace, automotive, medical and industrial machinery parts.

±0.005

Tolerance held in production

Not a lab number. Achieved on quoted parts with in-process monitoring and a documented setup sheet.

99.99%

Qualification rate

Raw material check, in-process monitoring and final inspection before anything ships.

12H

Quote and DFM analysis

Send a model and a drawing. Production can start within 24 hours of approval.

0

Minimum order quantity

One prototype or a 10,000+ part run on the same process and the same inspection standard.

4

Quality certifications

ISO 9001:2015, IATF 16949:2016, ISO 13485:2016 and ISO 27001:2022.

7,600 m²Manufacturing space
150Technicians
3Wholly-owned plants
<2%Historical late-delivery probability
Sector fit

What Each Industry Requires, and What We Deliver

Leader in Cnc Machining Service China

Aerospace brackets

Thin-wall aluminium brackets held to a flatness call across the full face.

  • ±0.005 mm
  • 5-axis single setup
  • 100% inspection
oplus_262178

EV housings and busbars

Machined copper and aluminium conductors with plating and laser marking.

  • IATF 16949
  • Ra 0.8–1.6 μm
  • Part marking 1.5 mm
6011

Medical instrument parts

316L and titanium components with documented material traceability.

  • ISO 13485
  • 316L / TC4
  • Reports on request
cnc machining

Robotics and automation

Aluminium and steel links, plates and end effectors in short runs.

  • No minimum order
  • 3–5 day shipping
  • Mill-turn parts
FAQs

Questions Buyers Ask Before Switching to Remote Sourcing

Can you quote without a 2D drawing?

A STEP model is enough to start. We read geometry, note critical features and send back a DFM note listing what we would change.

Send a drawing too if tolerances, threads or surface finish are called out. Without those numbers we have to quote a conservative default, and you pay for precision you may not need.

How do you handle a design change after the order?

Every job gets one shared folder and one revision letter. A change means a new revision, a re-quoted price if the geometry moved, and a fresh setup sheet.

If the change is small and the material is already cut, we tell you what is salvageable and what is not. That answer comes within a day, not after the parts ship.

What file formats do you accept?

STEP, IGES, X_T, STL, DWG, DXF and PDF. STEP is the safest for machining because it carries solid geometry without translation loss.

For sheet metal, DXF plus a PDF of the flat pattern and bend notes saves a round of questions.

Can I keep my design confidential?

Uploads are secure and confidential, and we sign an NDA on request. ISO 27001:2022 covers how we handle information internally.

We do not publish customer names or part images without written permission.

What tolerance and finish can you actually hold?

±0.005 mm and Ra 0.2–0.8 μm on parts where the geometry allows it. Standard production work sits at Ra 0.8–1.6 μm.

Deep pockets, long thin walls and small internal radii limit what any machine can hold. Our DFM note flags those features before cutting starts.

How fast can parts ship?

Quotation and free DFM analysis within 12 hours. Production can start within 24 hours of approval, and parts ship in 3–5 days.

Ship time depends on quantity, material availability and finishing. Anodizing or plating adds a step we quote up front rather than after.

Do you have a minimum order quantity?

No minimum order quantity. One prototype and a 10,000+ part run go through the same quoting, setup and inspection process.

Unit price drops with volume, but the first article review does not change.

How is inspection documented?

Raw material check, in-process monitoring and final inspection. 100% inspection before shipment, with reports on request.

First article reports, CMM data and material certificates are stored in the shared job folder so a question months later still has an answer.

Send a Model, Get a Price and a DFM Note

Upload a STEP file and a drawing. We return a quotation, a DFM analysis and a lead time, usually inside 12 hours.

12-hour quote100% inspectionNo minimum order quantityNDA on request

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