- 100+ machines including 20+ 5-axis centres; 100+ staff, 80%+ skilled technicians.
- Exports to 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 — based in China, serving customers worldwide.
- What "custom" actually obliges the shop to do, The common failure is a shop that quotes custom work but runs it as a variant of something it already makes.
- Build-to-print: the shop cuts to your drawing and measures against it.
Why does "custom" need proving rather than stating?
Custom work means the process is designed around your part rather than pulled off a shelf: fixture design, tool selection, and a first-article inspection plan that did not exist before your drawing arrived. That design work is the real content of a custom quote, and it is why the first article costs more than the hundredth.
The common failure is a shop that quotes custom work but runs it as a variant of something it already makes. The result is a part that meets the drawing in most dimensions and misses in the one that mattered.
The tell is in the questions you get back. A shop that will really build a process asks about function — what the feature does, what it mates with, what happens if it is at the limit of tolerance. A shop that will adapt an existing process asks only about quantity.
What design decisions move the cost on CNC precision machining?
Custom work means the fixture and the process are designed for your part, so the design decisions that matter are the ones affecting fixturing: a stable clamp face, a repeatable datum, and features that can be reached without a special-angle setup. Those three determine whether the fixture is simple or expensive.
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.
What capacity actually sits behind the claim?
Capacity is depth, not a headline machine. The table below is the routing map: each family has a lane, and the depth in each lane is what keeps a part out of someone else's queue.
| Machine family | Count | Representative models | Role in the schedule |
|---|---|---|---|
| 3-axis vertical machining | 50+ centres | Brother SPEEDIO S500Z2N / S700Z2N | Prismatic work at the lowest cost per part |
| 4-axis machining | 20+ centres | Mazak VCE-430AL / VCE-570CL | Indexed multi-face parts without re-fixturing |
| 5-axis machining | 20+ centres | Mazak VARIAXIS i series | Single-setup complex geometry |
| 5-axis mill-turn | — | Mazak INTEGREX i-H series | Turned and milled features in one clamping |
| CNC turning / mill-turn | 25+ lathes | Mazak QT-COMPACT 200MSY L | Round parts, live tooling |
| Swiss-type turning | — | Citizen Cincom A20 / Star SR-32JII / Tsugami B0205 | Long, slender parts at high L/D ratios |
| Precision grinding | 7+ grinders | — | Final tolerance on bearing seats and roundness-critical faces |
| Wire EDM | — | Sodick | Sharp internal corners and hardened material |
What to read out of this list: a part does not wait behind a single machine. Depth in the same family is what lets work move to another lane rather than sit in a queue, and it is what makes a prototype ramp to production on the same floor.
What is certified, and what is deliberately not?
Three certificates, each with a number you can check with the registrar: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En).
The IATF 16949 certificate excludes clause 8.3 (product design). That is normal for a build-to-print manufacturer and it is stated here rather than left for an auditor to discover: we cut to the drawings you provide, it does not originate the design.
What tolerance applies?
±0.003 mm on CNC milling, ±0.002 mm on CNC turning; ±0.002 mm where precision grinding or wire EDM is used, set feature by feature when we quote.
Which entity is responsible for the work?
Dongguan Zhuohang Ltd (Registration No. 91441900MA4UWT6X39, established 2005).
Four checks to run on any CNC precision machining quote
Whether you buy from this plant or another, these checks separate a real floor from a brochure. None of them require a purchase order.
- Is the fixture designed for this part or adapted from another? Ask for it in writing.
- Is there a written first-article inspection plan? Ask for it in writing.
- Who signs off the process before production starts? Ask for it in writing.
- What happens to tooling if you re-source later? Ask for it in writing.
What does a quote have to state to be comparable?
A quote is only comparable to another quote if it states the same scope: material, programming, fixturing, machining, finishing, inspection documentation, packing, and delivery terms. A number without that breakdown is not a price, it is an opening position. The item most often missing is inspection documentation. A first-article report is a document someone has to produce, and whether it is included changes the number.
Custom CNC precision documentation — the five artifacts that ship
A custom CNC precision part is documented end-to-end on five artifacts, and you should require all five on the first order: FAI report before production starts (every dimension measured, tolerance band, pass/fail status, signed by the inspector), material cert (MTR, EN 10204 3.1) as standard (not add-on), Cpk reports on production runs (with tolerance band, σ algorithm, time window), heat-lot traceability (heat lot stamped or tagged on the part, material traceable to the mill), program/fixture/inspection data on request. A shop that ships all five is one whose custom work is documented end-to-end; one that ships them on request is one whose documentation arrives late. The NRE on a custom part is the one-time cost that covers programming, fixturing, FAI, tool prep, gauge R&R. NRE at 5 pieces $200-800/part; at 1,000 pieces $0.20-0.80/part.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm floor, 100+ staff, 100+ machines including Mazak VARIAXIS I-600 5-axis, INTEGREX I-250H S mill-turn, TSUGAMI B0206-III / B0205-III, STAR SR-32JII / SR-32J Type N, Citizen Cincom A20-3F7 Swiss-types, Hexagon CMM with 10:1 measurement-to-tolerance per ANSI B89, temperature-controlled inspection room at 20 ±1 °C, 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). Tolerance: ±0.003 mm milling, ±0.002 mm turning, ±0.002 mm grinding, Ppk ≥1.67, Cpk ≥1.33. Contact: Felipe Iglesias, +86 13126536955, [email protected], PT/EN/FR/ES/ZH/JP.
Custom part programming — the CAM post-processor and simulation
Custom CNC precision parts require CAM programming that matches the machine's kinematics. The post-processor is the software that translates the CAM toolpath into G-code for a specific machine (Mazak VARIAXIS I-600, INTEGREX I-250H S, TSUGAMI Swiss-types); a generic post produces code that runs but holds wider tolerance, a machine-specific post produces code that holds ±0.003 mm. you should ask for the post-processor name and version on the RFQ. The simulation discipline: every custom program runs through a CAM simulation (Vericut, NCSIMUL, or the CAM's built-in) before the first cut to verify no collisions. The simulation takes 10-30 percent of the programming time but saves 2-4 hours of setup crash risk. The programming cost: a 3-axis part programs in 2-4 hours at $35/hour = $70-140; a 5-axis in 4-8 hours = $140-280; a Swiss-type in 6-12 hours = $210-420. The programming amortises across the lot.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm floor, 100+ staff, 100+ machines, Mazak VARIAXIS I-600, INTEGREX I-250H S, TSUGAMI B0206-III, STAR SR-32J Type N, Citizen Cincom A20-3F7, Hexagon CMM with 10:1, 20 ±1 °C, ISO 9001:2015 116024/A/0001/UK/En, IATF 16949:2016 131941/A/0001/SM/En, ISO 14001:2015 116024/B/0001/UK/En). Tolerance: ±0.003 mm milling, ±0.002 mm turning, Ppk ≥1.67, Cpk ≥1.33. Contact: Felipe Iglesias, +86 13126536955, [email protected], PT/EN/FR/ES/ZH/JP.
Custom part communication chain — five touchpoints
The custom CNC precision part's communication chain runs on five touchpoints: (1) the RFQ acknowledgement within 4 hours with the gauge R&R note; (2) the quote within 48 hours with NRE, unit price, material, lead-time itemised; (3) the order confirmation within 24 hours with the production schedule; (4) the FAI report before production starts; (5) the ship notice with the inspection report, material cert, heat-lot, tracking number. A shop that hits all five is one whose communication is anchored; one that misses any is one whose part is a black box. The contact: Felipe Iglesias, multilingual contact at each touchpoint.
The shop: Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005, 6,800 sqm, 100+ staff, 100+ machines, Mazak VARIAXIS I-600, INTEGREX I-250H S, TSUGAMI B0206-III, STAR SR-32J Type N, Citizen Cincom A20-3F7, Hexagon CMM 10:1, 20 ±1 °C, ISO 9001:2015 116024/A/0001/UK/En, IATF 16949:2016 131941/A/0001/SM/En, ISO 14001:2015 116024/B/0001/UK/En). Tolerance ±0.003 mm milling, ±0.002 mm turning, Ppk ≥1.67, Cpk ≥1.33. Felipe Iglesias +86 13126536955 [email protected] PT/EN/FR/ES/ZH/JP.
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). Intended 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). Intended 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). Intended 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). Intended for shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Intended 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.
Get a quote with the cost drivers named
Send your drawing to [email protected] or call +86 13126536955. We will tell you which tolerance or setup is driving the number, not just the number.
Frequently Asked Questions
How is material traceability maintained?
Incoming stock is checked against the mill certificate — composition by XRF, hardness where specified — and traceability is held per heat or per batch as the certificate defines it.
How quickly can you quote cnc precision machining?
Quotes are returned with a manufacturability read rather than a price alone — where a tolerance or a feature will drive cost, that is flagged at quote stage rather than after the first article. Turnaround depends on drawing completeness.
What is the minimum order quantity for cnc precision machining?
There is no minimum. Prototype quantities are run on the same machines as production quantities, which is what makes a later ramp a schedule question rather than a re-qualification.
Is your IATF 16949 certificate valid for design work?
No — clause 8.3 (product design) is excluded. The certification covers manufacturing to your design and the associated process controls, not originating design.
What files do you need for a quote?
Send a 3D model (STEP or IGES) plus a 2D drawing that names the tolerances, surface finishes, material spec and any inspection or certification needs. The drawing is the contract; the model alone typically leaves the tolerance scheme open.
Can you work to ASME Y14.5 as well as ISO?
Yes. Both geometric dimensioning conventions are used. The important thing is that the drawing states which one applies, because the same symbol can mean different things under the two standards.
Do you hold stock or consignment for repeat orders?
On repeat orders, a forecast lets the shop hold material and, where justified, dedicated fixturing in readiness. It is a commercial arrangement rather than a standard term, worth raising at order two rather than order one.
Continue reading: Custom CNC Precision Machining · 3 Axis CNC Precision Machining · 4 Axis CNC Precision Machining
Standards referenced on this page
- ASTM A582/A582M-12 — Standard Specification for Free-Machining Stainless Steel Bars
- ASTM B211/B211M-19 — Standard Specification for Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire
- ISO 9001 — Quality management systems — Requirements