CNC machine shop · Dongguan, China · since 2008
The reliable place to source your rapid prototypes and custom CNC parts
Custom milled and turned parts from our own 50-machine shop. Send an inch or metric drawing with ASME Y14.5 GD&T and get a quote back in 16 hours — with a note on anything that will cost more than it should.
6061-T6 · TURNED + MILLED · ASSEMBLY SET
Working with us from the U.S.
The four things buyers ask a Chinese shop
Drawings, communication, shipping and what happens when something is wrong. Here is how each one works, before you ask.
Your drawings stay in the shop
Files are used to quote and make your parts, nothing else. They are not shared with other suppliers or posted anywhere. We sign your NDA before you send anything, or send ours.
English, on your morning
Eileen and Bill handle every job from first email to shipment. We are at our desks seven days a week until 10 a.m. Eastern (7 a.m. Pacific; an hour earlier in winter), so a question sent overnight is answered before your day starts.
Door-to-door, duties handled
Express by DHL, FedEx or UPS to your dock. DDP is available — we pay duties and brokerage up front and put one number on the invoice, so nothing arrives C.O.D. HTS code and commercial invoice come with every shipment.
If a part is wrong, we fix it
Every first article is measured on the CMM before the run starts. If a toleranced feature is out on delivery, tell us within 14 days and we remake or credit it. We would rather lose the margin than the customer.
Capabilities
Milling, turning and sinker EDM under one roof
Milling, turning and sinker EDM run on machines we own, operated by people on our payroll.
Wire EDM and finishing beyond tumbling go to partner plants we have used for years, and every part comes back to us for inspection before it ships.
Milling
Housings, brackets, manifolds and plates on 3- and 4-axis machining centres. Nineteen of the 32 centres are 4-axis, so multi-face parts stay in one setup and true position holds between features.
- Achievable tolerance±0.0001″ / ±0.002 mm
- Envelope, approx.31 × 24 × 20 in
- Axes3 / 4 — no 5-axis
- Machines32
Turning
Shafts, bushings, pins, fittings and threaded parts on 18 CNC lathes — ten of them Swiss-type sliding-head machines with sub-spindles for Ø1–25 mm bar. Turned parts that need cross-holes or flats go straight to a milling setup in the same building.
- FitsISO 286 IT6 – IT8, gauged
- ThreadsUN, UNF, NPT, metric
- Machines18 (10 Swiss-type)
Sinker & wire EDM
Six sinker EDMs in our own shop for sharp internal corners, hardened tool steel and features a cutter cannot reach; electrodes are made in-house. Wire EDM — slow, medium and fast wire — runs at a partner plant we have used for years.
- Sinker EDM6 machines, in-house
- Wire EDMPartner plant
- Typical useHardened steel, punches, dies, keyways
Industries
Where our parts end up
Automation & robotics
Grippers, linkages, mounting plates and actuator housings — usually aluminium, usually in a hurry.
Automotive
Brackets, adapters, test fixtures and aftermarket components in steel, stainless and 6061/7075.
Medical devices
Instrument components and enclosures in 303/316 stainless, titanium and PEEK, with dimensional reports.
Aerospace, commercial
Non-flight-critical brackets, fixtures and ground-support parts. We are not ITAR-registered and do not take export-controlled work.
Materials
Stocked or sourced to your spec
U.S. designations below. If your drawing calls out an EN, DIN or JIS grade we cross-reference it and confirm on the quote. EN 10204 3.1 material certificates on request.
Metals
Plastics
Quality
First article on the CMM, before the run continues
- Every job — the first piece is measured on a coordinate measuring machine against the drawing before production starts.
- Dimensional report as a PDF with the shipment, on request — nominal, tolerance and measured value for each feature.
- Standards — ASME Y14.5 GD&T as drawn; unmarked dimensions to ISO 2768-m unless your title block says otherwise.
- Fits — ISO 286 / ANSI B4.1 fits gauged or measured, IT6 to IT8.
- Material certificates — EN 10204 3.1 supplied when ordered.
What we do not claim
We are not ISO 9001 or AS9100 certified and we are not ITAR-registered. If your purchasing rules require any of those, we are the wrong shop, and we would rather say so here than after you have sent a drawing.
What you get instead is a first-article report on every job and a phone call if anything is out.
Sample report →
What the report looks like
Sample first-article inspection report
One page per part: nominal, tolerance, measured value and deviation for every toleranced feature, GD&T callouts per ASME Y14.5, thread checks, surface-finish results from an independent test house when ordered, and who inspected, reviewed and released it. Inch with mm in brackets, or the other way round, to match your drawing.
Sample document with illustrative values — your report carries your part number and your drawing's tolerances.
Who you deal with
Three people, start to finish
No account managers, no ticket numbers. The owner, the engineer and your coordinator quote your part, follow it through the shop and ship it.
Runs the shop and has the final say on every quote, schedule and delivery commitment we make.
Your first and last contact. Quotes, schedules, shipping paperwork and every email in between.
Reads your drawing before a price goes out. Flags features that will cost more than they need to.
On the floor
Recent work
Send the drawing. You will have a price and a lead time in 16 hours.
Inch or metric. STEP, IGES, X_T, DWG, DXF or PDF.
FAQ
Questions U.S. customers ask first
Do you work in inches?
Yes. Send the drawing in whatever units it was drawn in. We program in the drawing units and inspect against them, so nothing gets converted by hand.
Is there a minimum order?
No. One piece is fine. Setup is spread over the quantity, so unit price falls as quantity rises, and we show you that on the quote.
How do duties and tariffs work?
You can ship on your own carrier account and handle import yourself, or ask for DDP and we handle duties, brokerage and delivery for one all-in price. Duty depends on the current U.S. tariff schedule for the HTS code; we tell you the code when we quote.
How do I pay?
Bank transfer (T/T). Typically a deposit with the order and the balance before shipment; terms are stated on the quotation.
What is the lead time?
It depends on the part. The quote states a lead time and it starts when the order and drawing are confirmed. We tell you early if anything slips.
Will you sign an NDA?
Yes, before you send drawings. Send yours or ask for ours.
Are you ISO 9001 certified?
No. What we do instead is measure the first article of every job on a coordinate measuring machine before the run continues, and send you the report as a PDF if you want it.
Contact
Request a quote
Drawing, quantity, material and when you need it. If something in the design will be expensive to machine, we say so before you commit.
- eileen@gymachining.com
- Phone / WhatsApp
- +86 137 9012 4916 · WhatsApp
- Hours
- Mon–Sun 08:00–22:00 (UTC+8) — until 10 a.m. Eastern
- Address
- 2nd Floor, Hongfu Building, No. 45 Lianma Road,
Dalingshan Town, Dongguan, Guangdong 523129, China