- ISO 9001:2015 / IATF 16949:2016 / ISO 14001:2015 — certificate numbers published and verifiable.
- Manufacturing to your print: the plant cuts to your design and reports against your drawing.
- Mill-turn: Round parts that also need milled flats, cross-holes, off-axis bosses, or keyways. Hydraulic fittings, connectors, shafts with clocked features.
- Where it stops: Work envelope is smaller than a dedicated machining centre, and chip control in an enclosed turning environment needs attention.
- Prototype and production run on the same floor and the same process.
What mill-turn changes about the process
Mill-turn is a machine that combines a turning spindle with milling capability and live tooling.
The part is completed in one clamping. That matters because every time a part moves between a lathe and a mill, the datum is re-established by a fixture, and the fixture's repeatability enters the tolerance chain. Removing the transfer removes that term.
Three things that change the price without changing the part
Mill-turn pays off when the turned and milled features must hold a relationship to each other. Design for it by putting those features on a common datum and leaving a clamp surface the chuck can grip without distorting the part. Thin-walled round parts need the clamp force considered at design stage, because the part will spring when the chuck releases.
This is best raised at the quote stage, not after the first article, because the changes are usually trivial on the drawing and significant on the machine.
How much capacity sits behind it?
100+ machines with depth in every relevant family. 50+ three-axis, 20+ four-axis, 20+ five-axis, 25+ turning centres, plus Swiss-type, grinding, and wire EDM.
What is the certification position?
ISO 9001:2015, IATF 16949:2016 (excluding clause 8.3 product design), and ISO 14001:2015 — each with a certificate number verifiable with the registrar.
Which geometries justify mill-turn?
Round parts that also need milled flats, cross-holes, off-axis bosses, or keyways. Hydraulic fittings, connectors, shafts with clocked features.
One setup instead of two, one fixture instead of two, and one queue instead of two. The saving is in the schedule as much as in the hourly rate.
What mill-turn cannot do
Work envelope is smaller than a dedicated machining centre, and chip control in an enclosed turning environment needs attention.
This boundary is stated deliberately. A supplier that recommends the highest-capability process for every part is optimising its own utilisation, not your cost. And the tell is a quote that never suggests simplifying the design.
How is the toolpath verified before it touches material?
Every programme is simulated offline before it reaches a machine: tool and holder collision, axis limits, and material removal against the stock model. On five-axis and mill-turn work this is not optional — the number of possible collision cases grows with each rotary axis, and a crash on a part that has already absorbed eight hours of cycle time is the expensive kind.
The verification step belongs in the quote. It is real engineering time, and a supplier that omits it is either simulating badly or not simulating at all.
How do you verify a supplier really has this capability?
Ask which features are completed in the single clamping and which, if any, need a second operation. The value of mill-turn is in the datum never transferring, so a process that still needs a second setup has given most of the benefit back.
None of these questions are hostile and all of them are cheap. A plant with the capability answers them easily; a brochure cannot.
Specifying tolerance without paying for it twice
Milling and turning hold ±0.002 mm (turning) / ±0.003 mm (milling); precision grinding and wire EDM hold ±0.002 mm. Those are process capabilities, not defaults, a drawing does not need every dimension at the limit, and specifying tighter than the function requires is the single most common driver of unnecessary cost on a machined part.
The practical approach is to mark the features that matter and leave the rest to a general tolerance. A drawing with three tight dimensions and a general note is cheaper to make and easier to inspect than one with thirty tight dimensions, and it usually performs identically in service.
Who is on the other side of the purchase order?
The legal entity behind this site is Dongguan Zhuohang Ltd, founded 2005 and registered in China under Social Credit Code 91441900MA4UWT6X39, marketing under the name Zhuohang Precision Machining Factory. Its registered and production address is No. 8, Shuibian Songyuan Road, Hengli Town, Dongguan, Guangdong, China 523470.
Use the National Enterprise Credit Information Publicity System and the 18-character code to verify a Chinese manufacturer. Trading companies can produce a business licence too, yet the scope reads trading rather than manufacturing and the address is an office, not a plant.
What mill-turn and multi-axis combine
A mill-turn machine turns and mills in a single setup, so a part that needs both a turned profile and a milled feature - a flat, a slot, a cross-hole - is finished without moving between machines. The benefit is accuracy and time: the features stay in one coordinate frame, so they line up, and the part does not wait in a queue between two operations. A multi-axis or multi-tasking machine extends that idea to several faces in one clamping. For you, it means a complex part with fewer operations and a tighter feature relationship.
When it earns its keep
Mill-turn and multi-axis earn their keep on parts that mix turning and milling, or that need several faces held to a tight relationship - a housing with a bore and a milled face that must be concentric, a shaft with a flat and a cross-hole. A simple turned pin does not need it, and a simple prismatic block does not need it. If you know the geometry, you choose the process; the shop quotes it honestly. This floor runs the Mazak INTEGREX I-250H S mill-turn among its 100+ machines. Contact Felipe Iglesias at [email protected] or +86 13126536955 with the drawing.
The evidence behind the numbers
Ask for proof and the answer is specific: Dongguan Zhuohang Ltd runs 100+ CNC machines on a 6,800 m² floor in Hengli Town, Dongguan, including the Mazak VARIAXIS I-600 five-axis, the INTEGREX I-250H S mill-turn, Brother SPEEDIO, and TSUGAMI, STAR and CITIZEN Swiss lathes. Inspection runs on a Hexagon CMM with the 10:1 gauge rule, and ISO 9001:2015, IATF 16949:2016 and ISO 14001:2015 are held by verifiable certificate number. Critical characteristics are tracked with Ppk 1.67 initial and Cpk 1.33 in production - a tolerance quoted here is a tolerance held.
Buyers across Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa are served from Dongguan with worldwide shipping. MOQ is 1 piece; lead times run about 3 / 7 / 30 days. Send the drawing and quantity to Felipe Iglesias at [email protected] or +86 13126536955 and the quote returns with the process spelled out.
Starting your order
The quickest route to a part is a model and a quantity. Send the STEP or IGES file with a 2D drawing that names the tolerances, datums, material grade and finish, plus the quantity and the lead time you need, and you get an itemised quote - material, setup, cycle time and inspection - not a round figure. No finished drawing? Send what you have and the questions that are blocking you; the goal is to begin, not to wait for a flawless package.
Email Felipe Iglesias at [email protected] or call +86 13126536955. MOQ is 1 piece, lead times run roughly 3 / 7 / 30 days, and shipping covers Europe, the Americas, Asia, Oceania and Africa, plus worldwide from Dongguan.
De-risking a first order
A trial order of a few pieces is the cheapest insurance you can buy — it proves the routing, the tolerance and the paper trail on a small batch before the volume order locks in. One floor, one quality system, one accountable party, whether the run is a single part or a full production lot, so what the trial confirms is what production repeats.
What this shop actually runs
If you ask for capability evidence, you deserve a specific answer. This facility operates 100+ CNC machines across 6,800 m2 in Dongguan, China, staffed by 100+ people. The machines, listed by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Set up for compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Set up for prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Set up for long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Set up for shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Set up for hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerance bands: ±0.003 mm milled, ±0.002 mm turned, ±0.002 mm ground or wire-cut. Capability indices: Ppk >= 1.67 at the initial study; Cpk >= 1.33 ongoing in production.
Certifications: ISO 9001:2015 (116024/A/0001/UK/En) · IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded) · ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, since 2005).
Service area: we supply Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa, with worldwide delivery from China.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Not sure this is the right process?
Send the model and the drawing and get a straight answer on whether this route is the right one, including where a design change would cut cost. Reach Felipe Iglesias at [email protected] or +86 13126536955.
Frequently Asked Questions
Are you a manufacturer or a trading company?
A manufacturer. The legal entity is Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39), operating a 6,800 m² facility with a hundred-odd machines and 100+ staff in Dongguan. Factory visits are welcome.
What materials do you machine?
Aluminum, stainless steel, titanium, brass, copper, and Inconel for metals; PEEK and Delrin (POM) for plastics. Material certificates are verified on incoming stock.
What are the limits of mill-turn?
Work envelope is smaller than a dedicated machining centre, and chip control in an enclosed turning environment needs attention. Knowing the boundary up front is what keeps a quote honest.
When is mill-turn the right choice?
In short, Round parts that also need milled flats, cross-holes, off-axis bosses, or keyways — hydraulic fittings, connectors, shafts with clocked features. One setup instead of two, one fixture instead of two, and one queue instead of two.
What happens if the first article does not conform?
In short, The nonconformance is documented and the corrective action is agreed before any further parts are made. Whether the replacement cost sits with the plant or the customer depends on where the deviation came from, which is why the revision and the drawing standard are confirmed in writing at the start.
What is the difference between a prototype build and a production build here?
Usually only quantity and scheduling. Both run on the same machines and the same process, which is what makes a later ramp a scheduling change rather than a re-qualification.
What tolerances can you hold?
In short, ±0.003 mm on CNC milling, ±0.002 mm on CNC turning, and ±0.002 mm where precision grinding or wire EDM is used. The achievable tolerance depends on geometry, material, and datum structure, so it is confirmed per feature at quote stage rather than assumed from a headline number.
When is mill-turn a sound choice?
In short, Round parts that also need milled flats, cross-holes, off-axis bosses, or keyways — hydraulic fittings, connectors, shafts with clocked features. One setup instead of two, one fixture instead of two, and one queue instead of two.
Continue reading: 3 Axis CNC Turning Service · 4 Axis CNC Turning Service · 5 Axis CNC Turning Service
Standards referenced on this page
- ASTM A582/A582M-12 — Standard Specification for Free-Machining Stainless Steel Bars
- ASTM B348/B348M-21 — Standard Specification for Titanium and Titanium Alloy Bars and Billets
- ISO 9001 — Quality management systems — Requirements