Custom CNC Milling Services for Precision Milled Parts

Custom milled parts on our own floor of Mazak 5-axis and horizontal centers, gantry machines for parts up to ~2,000 mm, and high-speed cells holding ±0.005 mm — inspected on our Mitutoyo CMM to ±0.001 mm. Every drawing is read by a manufacturing engineer who routes it to the right spindle and counts your setups before quoting.

CNC Milling at Mecvona: Setups Are the Invoice — So We Plan Them Before We Price Them

CNC milling removes material from a fixed workpiece with rotating cutting tools, building prismatic geometry face by face: pockets, bosses, slots, drilled and tapped holes, contoured 3D surfaces. It is the default process for housings, brackets, manifolds, plates, robot components, and any part whose shape is defined by machined faces rather than an axis of rotation.

Mecvona runs the full milling floor in-house. It spans 3- and 4-axis vertical centers, a Mazak horizontal center for pallet-fed production, 5-axis machines (Mazak VARIAXIS and NIKKEN platforms) for contours and single-setup multi-face work, gantry double-column machines for parts approaching 2,000 mm, and high-speed cells that hold ±0.005 mm on tight aluminum work — all under one roof, one quality system, one point of accountability.

Our operating principle is plain: don’t blindly chase 5-axis — if a 3-axis machine does the job well, we don’t add cost to the customer. Every additional clamping adds setup labor, adds fixture cost, and stacks a fresh alignment error onto your tolerances. So our DFM review reads your part the way the machine will — face by face, tool reach by tool reach — before a price is attached.

Why engineer review matters for milled parts

Instant-quote algorithms price milled parts by bounding box and volume removed. Your real cost is driven by things a mesh analysis half-sees: a pocket 60 mm deep demanding a long-reach tool at a third of the feed rate, an internal corner radius forcing a 2 mm end mill through the whole cavity, a tolerance stack that only closes if two faces machine in the same clamping. Our engineers catch these on every RFQ and reply with specifics — what drives the price, what we’ll fixture, and which revision, if any, cuts cost without touching function.

The Machine Floor Behind Your Milled Parts

Most milling pages describe “3-, 4-, and 5-axis capability” in the abstract. Ours names the classes of machine actually running on our floor — because a supplier that can show you the floor is a supplier you can audit. The specific platform your part runs on is confirmed at quoting.

3- & 4-Axis VMCs

The workhorses — Mazak VCN-series, QuickTech, Taikan and FUYU vertical centers with FANUC 31i-B control, backed by 100+ Kitagawa-class 4th-axis indexers on our floor. Prismatic housings, brackets, plates, and 4-sided parts machined in one clamping.

Horizontal Machining Center

A Mazak HCN-series horizontal center with pallet changing — the production machine for higher volumes, better chip evacuation on deep cavities, and multi-face parts that need to run lights-out.

5-Axis Simultaneous

Mazak VARIAXIS C-600 plus NIKKEN 130 and dedicated 5-axis centers (UT-380 class). Contoured surfaces, impellers, and compound-angle parts machined in a single setup under one datum scheme.

Gantry / Double-Column

Double-column gantry centers (YSMV-2013 class) for large-format work — base plates, structural frames, and fixtures up to roughly 2,000 mm without splitting the part across setups.

High-Speed Cells

High-speed machining centers (DFM-V and YSV-class, ~15k+ RPM) holding ±0.005 mm. Thin-wall aluminum, fine detail, and Ra-critical cosmetic surfaces where standard parameters would chatter.

In-House Secondary Processes

Under our own roof: honing, electropolishing (EP), passivation, heat treatment, plating, anodizing — and even electron-beam welding. Fewer outside handoffs means tighter control and faster turnaround.

Factory visits welcome

We publish our equipment list and welcome on-site audits. If your program needs a supplier qualification visit before you commit — semiconductor, aerospace, and automotive customers routinely do — we’ll host it.

3-Axis vs. 4-Axis vs. 5-Axis: How We Route Your Part

More axes are not automatically better — they’re a tool for deleting setups. This is the routing logic our engineers apply on every job: use the least machine that holds the drawing.

X · Y · Z

3-Axis Milling

X · Y · Z + A

4-Axis Milling

X · Y · Z + A + C

5-Axis Milling

You don’t need to specify the machine — send the drawing and we route it. If a 5-axis quote surprises you, the DFM notes show exactly which feature forced it, and whether a small revision brings the part back to 3-axis economics. That “least machine that holds the drawing” discipline is how we keep your costs down.

CNC Milling Capabilities & Specifications

The envelope below is our verified in-house milling capability. Parts outside these limits aren’t auto-rejected — they’re reviewed by the engineering team, who will tell you plainly whether we hold your drawing or should say no.

Specification Capability Notes
Machine classes 3/4/5-axis · horizontal · gantry · high-speed Mazak, NIKKEN, FANUC-controlled and high-speed platforms
Max part size (gantry) ~2,000 mm class Double-column YSMV-2013-class centers
Typical VMC work envelope 500 × 400 × 300 mm 3/4-axis vertical centers; larger on horizontal & gantry
General tolerance ISO 2768-f / ±0.01 mm FUYU 3/4-axis class, applied where drawing gives no callout
Tightest attainable tolerance ±0.005 mm High-speed cells (DFM-V / YSV class); confirmed per feature at DFM
Metrology resolution ±0.001 mm Mitutoyo CMM 4078-series, traceable, records kept 3 years
Surface finish (as-milled) Ra 3.2 μm std · Ra 0.8 μm attainable Ra 0.4 μm on high-speed finishing passes
Threads M1.6 – M42, UNC/UNF, NPT Thread-milled or tapped, gauge-verified to class
Monthly capacity 50,000 – 80,000 parts Two-shift operation
Sampling lead time 3 – 5 working days First-article / prototype turnaround
Production lead time 7 – 15 working days Volume-dependent; expedite on review

CNC Milling Materials

The grades below are run in production on our floor — not an aspirational catalog. Material is sourced mill-certified with traceability from heat number to finished part, and RoHS composition is verified in-house by X-ray fluorescence when your program requires it.

Aluminum Alloys

Titanium and Inconel are run for aerospace and medical programs under AS9100D discipline: rigid setups, high-pressure coolant, and proven parameters that manage the heat these alloys refuse to conduct away. Quotes reflect real superalloy cycle times, not aluminum times with a multiplier.

Typical milled parts: aerospace brackets and fittings, medical instrument bodies, high-temperature components, motorsport parts.

Stainless Steel

A production staple in our shop, including the ultra-high-purity semiconductor work we’re known for — UHP valve bodies, BA/VCR fittings, and vacuum components where surface integrity is non-negotiable. 316L covers marine and medical housings; 440C hardens for wear parts.

Typical milled parts: semiconductor valve bodies, medical device housings, marine brackets, food-grade machine components, vacuum manifolds.

Carbon & Alloy Steel

From free-machining 12L14 for high-volume plated parts to case-hardening 16MnCr5 and 100Cr6 bearing steel. Heat treatment is done in-house — quench-and-temper, case hardening — then parts are finish-milled or ground to final size.

Typical milled parts: fixture plates, wear components, gear and shaft blanks, tooling, structural steel brackets.

Brass & Copper

C3604 brass mills fast for connectors, terminals, and fittings — a high-volume specialty of ours, including automotive and new-energy charging terminals. Copper serves conductivity-critical busbars and RF parts, cut with sharp high-rake tooling for clean walls.

Typical milled parts: automotive connector terminals, EV charging contacts, busbars, RF components, precision fittings.

Titanium & Superalloys

The backbone of milled work: 6061 for housings, fixtures, and structural parts with excellent machinability and anodizing response; 7075 for near-steel strength in aerospace brackets and high-load frames; 2024 where fatigue performance matters. High-speed cells mill thin aluminum walls that standard parameters would fold.

Typical milled parts: robot structural parts, electronics enclosures, optical mounts, heat sinks, drone frames.

Engineering Plastics

POM and Nylon 66 are our precision-plastic staples — dimensionally stable, low-friction, and forgiving of tight tolerances. Plastics are fixtured gently and cut sharp, with tolerance bands set per polymer rather than copied from metal, since plastics move thermally and under clamping.

Typical milled parts: insulator plates, wear pads, jigs and fixtures, semiconductor handling components, seal seats.

Surface Finishes & Secondary Processes

A real advantage of Mecvona is how much finishing stays under our own roof. Where most machine shops ship parts out for plating and treatment — adding days and handoff risk — the processes marked below run in-house.

As-Milled

Clean machined finish, deburred with edges broken unless the drawing says otherwise. Fastest, lowest cost.

Ra 3.2 μm std · Ra 0.8 μm attainable

Anodizing

Type II corrosion-resistant and Type III hardcoat on aluminum, dyeable; masking available for tolerance bores.

Type II & Type III

Electroplating

Nickel, zinc, and precious-metal plating for corrosion, conductivity, and wear — on our own dedicated plating lines.

EN & decorative plating

Passivation

Citric or nitric bath that strips free iron left by tooling and rebuilds the passive layer on stainless housings and manifolds.

ASTM A967

Electropolishing (EP)

Brightens and deburrs stainless while improving corrosion resistance — critical for semiconductor and medical surfaces.

Dedicated EP line

Honing

Precision bore finishing (conventional and abrasive-flow / extrude honing) for cylindricity and mirror ID surfaces.

7 honing machines

Heat Treatment

Quench-and-temper, case hardening, and stress relief handled in-house for dimensional control.

Per spec

Electron-Beam Welding

EBW for precision joining of milled and turned assemblies — a capability few machining suppliers hold in-house.

Vacuum EBW

Quality Control: Named Instruments, Traceable Records

Anyone can write “CMM inspection.” Below is our actual metrology floor and inspection discipline — because for prismatic geometry, “in spec” means flatness, perpendicularity, and true position verified on instruments precise enough to trust.

01

Certified Management Systems

IATF 16949:2016 for automotive programs, AS9100D for aerospace (scope: machining of aerospace precision hardware), ISO 14001:2015 environmental, and ISO 10012 measurement management — audited systems, not logos. PPAP supported for automotive customers.

02

Named Metrology Floor

Mitutoyo CMM (4078-series, ±0.001 mm) for true position, flatness, and profile; Rational 2D/2.5D projectors; RKE CCD vision systems; Mitutoyo surface-roughness testers; X-ray fluorescence for RoHS material verification; salt-spray and push-pull force testing. GO/NO-GO gauging on threads.

03

Four Inspection Gates, 3-Year Records

Every part passes at least three independent gates — IQC (incoming), IPQC (in-process), FA (first article), and OQC (outgoing). Inspection records are retained three years and fully traceable. FAIR, dimensional reports, and material certs travel with your shipment or arrive digitally before it ships.

Inspection instruments on our floor.

Instrument Precision
Mitutoyo CMM 4078-series ±0.001 mm
2D / 2.5D projectors (Rational) ±0.001 mm
Height gauge / micrometer (Mitutoyo) ±0.001 mm
CCD vision systems (RKE) ±0.002 mm
Surface roughness (Mitutoyo 178-series) Ra to spec
X-ray fluorescence (RoHS) Composition

CNC Milling vs. Turning vs. Sheet Metal: Which Process Fits Your Part?

Send the drawing and we’ll route it — but if you’re still designing, this is the decision logic our engineers apply.

Choose CNC Milling when…

Choose CNC Turning when…

Consider Sheet Metal when…

Hybrid parts are normal: a milled housing with a turned seal journal, or a turned body with milled flats. We run turn-mill and 5-axis machines that cover the overlap in one setup, and when a part is better split across processes, one engineer plans both so datums agree. See the full picture on our CNC machining services hub.

How Ordering Milled Parts From Mecvona Works

This is our actual production workflow — eight controlled stages from your drawing to a packed shipment, with one engineering owner accountable throughout.

01

Drawing Review & DFM

A manufacturing engineer walks your part face by face — tool reach, corner radii, wall sections, setup count — and flags anything costing you money unnecessarily.

02

Process Planning & Fixturing

Machine routing (3/4/5-axis, horizontal, gantry) and fixture design — the “hidden heroes” that decide whether your tolerances hold at volume.

03

Programming & Simulation

CAM programming with full toolpath simulation before a single chip is cut, catching collisions and gouges virtually.

04

First-Article Setup

First-off is machined and inspected against the drawing before the run is released — the gate that protects the whole batch.

05

Production

Volume machining under two-shift operation, with in-process (IPQC) checks at set intervals across the run.

06

Full / Sampling Inspection

Final inspection per the agreed plan on CMM and vision systems — flatness, true position, thread gauging, roughness.

07

Cleaning & Deburring

Every part cleaned, deburred, and rust-protected — the unglamorous steps that decide how the part arrives.

08

Packing & Worldwide Delivery

Spec-compliant packaging and DDP/DAP/EXW shipping worldwide, with FAIR and certs bundled or sent digitally.

CNC Milling FAQ

The questions engineers and sourcing managers actually ask us before their first milling order.

What machines are actually behind these milled parts?

Our own floor: 3- and 4-axis vertical centers (Mazak VCN, QuickTech, FUYU) with 100+ indexers, a Mazak horizontal center for pallet-fed production, 5-axis machines (Mazak VARIAXIS, NIKKEN), gantry double-column centers for parts to ~2,000 mm, and high-speed cells holding ±0.005 mm. The specific platform your part runs on is confirmed at quoting, and factory audits are welcome.

General work is held to ISO 2768-f or ±0.01 mm on standard 3/4-axis centers. High-speed cells hold ±0.005 mm on critical features, confirmed in writing per feature at DFM review. Geometric tolerances — flatness, perpendicularity, true position — are inspected on a Mitutoyo CMM with ±0.001 mm resolution against your datum scheme, and where a cross-face position callout is tight, we machine both faces in one clamping so refixture error never enters the stack.

Two honest triggers: contoured surfaces a 3-axis tool physically can’t reach at the correct angle (impellers, blades, compound-angle faces), and tight positional tolerances across multiple faces that must share one clamping. Everything else is usually cheaper on 3- or 4-axis. It’s written into our own manufacturing philosophy: if a 3-axis machine does the job well, we don’t add cost. Our quotes state which feature, if any, forced the 5-axis routing so you can verify it.

Up to roughly 2,000 mm on gantry double-column centers — base plates, structural frames, and large fixtures machined in one piece rather than split across setups. Most prismatic work runs comfortably within a 500 × 400 × 300 mm vertical envelope, with the horizontal center covering higher-volume mid-size parts. If your part is between sizes, send the drawing and we’ll route it to the machine that holds your tolerances most economically.

What volumes can you handle, and how fast?

We run two shifts and process 50,000–80,000 parts per month depending on complexity. Prototype and first-article samples turn in 3–5 working days; volume production typically ships in 7–15 working days. Minimum order is one piece — prototypes are a normal part of the workload — and quotes show price breaks at multiple quantities so you can see how unit cost falls with volume.

An unusually deep set for a machining supplier: anodizing, electroplating (dedicated nickel/zinc lines), passivation, electropolishing, honing, heat treatment, and even electron-beam welding all run in-house. Keeping these under our own roof means fewer outside handoffs, tighter dimensional control across the finish, and shorter lead times than a shop that subcontracts every coating.

An NDA is signed before any file transfer. Your models, drawings, and the CAM programs and fixtures we build from them are treated as controlled documents — access limited to the engineers and operators assigned to your project, never repurposed, never photographed for marketing without written approval. For export-controlled or otherwise sensitive work, ask for our handling procedure up front and we’ll document it before you commit a PO.

Yes. We hold IATF 16949:2016 (automotive), AS9100D (aerospace, with a scope covering machining of aerospace precision hardware), ISO 14001:2015, and ISO 10012 measurement management, and already produce ultra-high-purity semiconductor components — UHP valves, BA/VCR fittings, vacuum bodies. PPAP is supported for automotive, FAIR for aerospace, RoHS verification by X-ray fluorescence, and inspection records are retained three years and fully traceable.

Send Your Model. An Engineer Reads It Today.

Upload your STEP file and drawing for a firm quote within 24 hours — with the machine routing, setup plan, DFM feedback, an inspection plan for your critical features, and price breaks across quantities. No account required, NDA available first.