Milling
Housings, plates, brackets, manifolds, fixtures — one-off through series.
- 32 machining centres, 3- and 4-axis (19 four-axis)
- Up to roughly 800 × 600 × 500 mm
- ±0.002 mm achievable on milled features
Machined & sheet-metal parts · Dongguan, China · since 2008
Custom parts to your
drawing, one to a few
thousand, from a shop
that owns its machines.
CNC milling, turning and sinker EDM on our own machines; sheet metal, laser cutting, wire EDM and finishing through partner plants we have used for years — all delivered under one part number. Send a drawing, get a price in 16 hours.
No CAD file yet? A dimensioned sketch or a PDF is enough to start — send it over.
2008Making parts since
50CNC machines, all ours
6Sinker EDM machines, in-house
16 hTypical quote turnaround
What we make
What we make, and where it is made
Milling, turning, sinker EDM, tumbling and inspection are ours. Wire EDM, sheet metal, laser cutting, welding, plating and coating are not — we organise those with partner plants and say so below, so you always know where your part goes.
Turning
Shafts, pins, bushings, adapters, threaded parts, with milled features added in the same building.
- 18 CNC lathes, 10 of them Swiss-type with sub-spindle
- Diameters 3 mm to 250 mm
- Threads cut, not formed, where the drawing asks
Wire & sinker EDM
Sharp internal corners, hardened material and blind pockets a cutter cannot reach.
- 6 sinker EDM in-house; wire EDM at a partner plant
- Profiles straight from DXF or STEP
- Electrodes made in-house
Inspection
First article measured on the CMM before the run continues. Report as a PDF on request.
- Bridge-type CMM, Renishaw probe
- Nominal, tolerance, measured, deviation per feature
- ISO 2768-m unless the drawing says otherwise
Laser cutting & punching
Flat parts, panels, plates and blanks from sheet, cut at partner plants we have used for years.
- Fibre laser: steel 0.5–12 mm, stainless 0.5–8 mm, aluminium 0.5–6 mm
- Steel, stainless and aluminium sheet
- Holes, slots and forms in one hit
Bending & forming
Enclosures, brackets, chassis and frames folded from sheet at a partner plant, then back to us for any machining and inspection.
- Press brake forming at our partner plant
- Bend radius and K-factor from your drawing
- Inserts and studs fitted after forming
Welding & assembly
Welded and bolted assemblies delivered under one part number. Welding is done by a partner shop; machining and the final check are ours.
- Steel, stainless and aluminium
- Machining before or after welding as the part needs
- Fasteners, inserts and hardware sourced by us
Tumbling & finishing
Deburring and stone-wash here; anodising, plating and coating coordinated with partner shops.
- 2 tumbling machines in-house
- Anodising, plating, passivation, powder coating organised for you
- Parts come back to us for inspection before shipping
Surface finishing — partly ours, the rest coordinated
Tumbling we do ourselves, on our own two machines. Anodising, black oxide, plating, passivation, blasting, polishing and powder coating run at shops we work with. We organise it, the parts come back to us for inspection, and it all arrives on one invoice.
Anodising (clear / coloured / hard)Black oxidePlating (zinc, nickel, chrome)Sand and bead blastingBrushing and polishingPowder coatingLaser marking
Send a drawing, get a real price.
Price, lead time and what is and is not included — back within 16 hours. No portal to sign up for, no minimum quantity.
Why buy from the shop
Four plain reasons
And two sections down, a list of what we cannot do. We would rather lose the enquiry than the order.
01
You talk to the shop, not a broker
The machines in the list below are ours. When a job needs sheet metal, wire EDM or a finish we do not do, we tell you which partner plant does it — nobody quietly forwards your drawing and adds a margin.
02
No minimum order quantity
One part is a job. A thousand parts is a job. The price per part changes; whether we take it does not.
03
Four engineers read the drawing
If a feature will make the part expensive, or a tolerance is tighter than it needs to be, you hear it with the quote.
04
Your files stay with us
Drawings go to nobody outside the shop. NDA on request, before you send anything.
Our shop
What stands on our floor
50 CNC machines, 6 sinker EDMs and our own measuring room in Dalingshan Town, Dongguan. Sheet metal, laser cutting and wire EDM come from partner plants, and the list says so.
| Qty | Machine |
|---|---|
| 32 | CNC machining centres — 19 × 4-axis, 13 × 3-axis |
| 18 | CNC lathes — 10 Swiss-type with sub-spindle, 8 standard |
| 4 | Cam-type bar-fed automatic lathes (small brass parts) |
| 6 | Sinker EDM |
| — | Wire EDM, sheet metal, laser cutting, welding and surface treatment: long-term partner plants |
| 2 | Tumbling machines (stone-wash) |
| 4 | Engineers on staff |
Materials
Materials we run regularly
These are the ones always moving through the shop. Call out the material number or the EN designation on the drawing. If yours is not listed, that is not a no — ask.
| Material no. | Designation | Also known as |
|---|---|---|
| 3.3211 | EN AW-6061 · AlMg1SiCu | AA 6061 |
| 3.2315 | EN AW-6082 · AlSi1MgMn | AA 6082 |
| 3.4365 | EN AW-7075 · AlZn5,5MgCu | AA 7075 |
| 3.3547 | EN AW-5083 · AlMg4,5Mn0,7 | AA 5083 |
| 1.4301 | X5CrNi18-10 | AISI 304 |
| 1.4404 | X2CrNiMo17-12-2 | AISI 316L |
| 1.0038 | S235JR | St 37-2 |
| 1.0570 | S355J2 | St 52-3 |
| 1.7225 | 42CrMo4 | AISI 4140 |
| 1.2379 | X153CrMoV12 | AISI D2 |
| 2.0401 | CuZn39Pb3 | Ms58 |
| 2.0065 | Cu-ETP | C11000 |
| 3.7035 | Ti Grade 2 | R50400 |
| 3.7165 | TiAl6V4 | Ti Grade 5 |
Engineering plastics
POM-CPA6PA66PEEKPTFEPCPMMAPETPPSPEI (Ultem)PVC / CPVCUHMW-PEABSPPHDPEPSUPPSUPAI
Over 50 materials
With over 50 materials to choose from, we provide unmatched flexibility in bringing your designs to life. Discover the perfect solution, tailored to your specifications and precision-engineered for optimal performance, durability, and quality.
Quality
Tolerances, documents, and what we do not have
Read the right-hand column before you order.
✓What you get
- General tolerances DIN ISO 2768-m
- unless your drawing says otherwise. Tighter is fine — mark it and we quote it. ±0.002 mm is achievable on milled features.
- First article measured before the run
- The first part off the machine goes on the coordinate measuring machine. If a toleranced feature is out we call you instead of cutting the rest.
- Dimensional report on request
- Actual value, nominal, upper and lower tolerance and the deviation, per measured feature, as a PDF. Ask for it with the order — it is not automatic.
- EN 10204 3.1 material certificate
- on request, with batch / heat number. Say so with the enquiry, because certified stock takes longer to arrive.
- Drawings kept confidential
- Your files go to nobody outside the shop. NDA on request.
!What we do not have
- No ISO 9001 certificate
- We are not currently certified. If your supplier approval needs the certificate, we would rather tell you now than after the order.
- No EMPB to VDA Volume 2, no PPAP
- A normal dimensional report you can have. The formal automotive first-article formats you cannot.
- No casting, forging or injection moulding
- We machine metal and plastics. Cast, forged or moulded parts are not ours, and we say so rather than quietly subcontracting them.
- No 5-axis simultaneous machining
- Our centres are 3- and 4-axis. If a part genuinely needs simultaneous 5-axis work, we tell you when we see the drawing — and can have it quoted by a 5-axis partner shop and coordinate the job for you.
Recent work
Parts from our own floor
We do not publish customer parts or drawings. Every customer signs an NDA with us, and yours will be treated the same way. The parts below are our own sample and demonstration pieces.
How it works
Five steps, no portal to sign up for
01
Send the drawing
STEP, IGES, X_T, DWG, DXF or PDF. Tell us the quantity and the material.
02
We read it before quoting
Four engineers on staff. Questions come back to you rather than guesses going into the price.
03
Quote
Price, lead time and what is included. Back within 16 hours.
04
We make it
First article measured on the CMM before the rest of the run is cut.
05
Shipping
DHL, FedEx or UPS on your account or ours, or to your forwarder in Shenzhen.
Who you deal with
Three people, start to finish
No account managers and no ticket numbers. The owner, the engineer and your coordinator quote your part, follow it through the shop and ship it.
WillFounder & General Manager
Runs the shop and has the final say on every quote, schedule and delivery commitment we make.
EileenProject Coordinator
Your first and last contact. Quotes, schedules, shipping paperwork and every email in between.
BillEngineering Manager
Reads your drawing before a price goes out. Flags features that will cost more than they need to.
FAQ
Questions we get asked
What files can I send?
STEP, IGES, X_T, X_B, DWG, DXF or PDF. A 3D model plus a drawing with the tolerances marked is the fastest route to an accurate price. If all you have is a PDF drawing, send it — we will come back with questions rather than guess.
How small an order will you take?
One part. There is no minimum order quantity. The unit price obviously falls with quantity, but a single prototype is a normal job here.
How long does a quote take?
Within 16 hours. We are in Dongguan, UTC+8, and read email from 08:00 to 22:00 every day of the week, so European and North American enquiries are normally answered by the time you are back at your desk.
How tight a tolerance can you actually hold?
±0.002 mm is achievable on milled features — not on every feature of every part. Mark the tolerances that matter on the drawing. Anything unmarked we work to DIN ISO 2768-m.
Are you ISO 9001 certified?
No. We are not currently certified, and we would rather say that plainly than let you find out during supplier approval. What we do have is a measuring room, first-article inspection before every production run, and a dimensional report on request.
Do you actually make the parts, or subcontract them?
Milling, turning and sinker EDM happen in our own shop in Dalingshan, Dongguan — the machine list on this page is our floor. Sheet metal, laser cutting, welding and wire EDM run at partner plants we have used for years, and surface finishing too: tumbling is ours, while anodising, plating, passivation, blasting and powder coating run at shops we work with. We organise that and it comes on one invoice, and we tell you so you know where your part goes.
Can you ship to my country?
Yes — DHL, FedEx or UPS, on your account or ours. If you use a forwarder in Shenzhen or Hong Kong we deliver there instead.
Will you sign an NDA?
Yes, and before you send anything if you prefer. Drawings and models go to nobody outside the shop either way.
Contact
Talk to us
We’re here to help and answer any questions you might have. We look forward to hearing from you.
- eileen@gymachining.com
- Phone / WhatsApp
- +86 137 9012 4916
- Address
- 2nd Floor, Hongfu Building, No. 45 Lianma Road,
Dalingshan Town, Dongguan, Guangdong 523129, China - Hours
- Mon–Sun 08:00–22:00 (UTC+8)
- Quote turnaround
- Within 16 hours