Mounting plate
What was done
CNC milling in 6061-T6 aluminum
Finish
Anodized in 4 colors · Laser marking
CNC machining
Custom CNC parts, finished by one supplier.
- 3- and 5-axis milling and turning
- Metal and plastic
- From one prototype to production runs
- A price per part, in 24–48 hours
Your parts protected by an NDA.
- CNC
Our CNC service
We mill and turn your parts in metals and plastics, in 3 and 5 axes, and finish them in the same order: anodizing, bead blasting, laser marking. You send the STEP model and the 2D drawing and get a price per part in 24–48 hours, from one unit to a production run.
Examples
What is done on each part, finish included.
Flange nut
What was done
CNC turning in 6061 aluminum
Finish
Anodized in 5 colors · Laser marking of the torque
Angle bracket
What was done
CNC milling in aluminum
Finish
Bead blasting · Anodizing
Food-grade HDPE parts
What was done
CNC machining in food-grade HDPE
Suitable for direct contact with food.
Milling & turning
We cut from solid, in as few setups as the part allows.
Most prismatic parts never need more than three axes. When a part has features on several sides, five cut them in one go.
5-axis milling
Multi-sided geometry cut in a single setup — fewer fixturing errors and tighter true-position tolerances than separate 3-axis operations.
3-axis milling
The low-cost default for brackets, plates and enclosures.
Turning & live tooling
Round parts complete, flats and cross-holes in one setup.
Prototype to production
One program and inspection plan, part one to part 10,000.
Technical advice
Any question, an engineer advises you.
We check the material, tolerances and finish on your drawing before giving you a price.
Drag to rotate
Rotate the demo part yourself, or pick a constraint below — these are the same checks we run on every CNC file before it's quoted.
What we check
Sharp internal corners, deep pockets and undercuts move a CNC price more than anything else. Rotate the part, or pick a feature, and see why.
Measured against the CAD
Critical dimensions checked with 3D metrology, on request.
What to send
What you send, and what you get back.
The 3D model and the PDF drawing are enough.
Your 3D model (STEP) and the 2D PDF drawing
The model gives the geometry; the drawing carries what the model cannot say: threads, tolerances, surface finish. Material, quantity and finish are chosen when you upload the part.
A price per part, in 24–48 hours
With the unit price and the lead time of every part, finishing included.
If it can’t be made as drawn, the change it needs
We tell you before anything is made, and requote it.
Before you send a file
Check the feasibility of your part.
Material, tolerance, size and quantity move a CNC price the most. This gives you a rough guide, not a quote.
Material
Tightest tolerance needed
Largest dimension
25
11,00010,000+
Setup complexityLow
No red flags from these inputs — a straightforward CNC job.
A directional read, not a quote — geometry details (pockets, corners, undercuts) move this more than any single input here. Send the part for real numbers →
Everything about CNC machining
Spec sheet
Tolerance±0.1 mm as standard, tighter on the features that need it.
Processes3-axis milling, 5-axis milling, CNC turning and live tooling.
MaterialsAluminum, stainless and mild steel, ABS, PEEK and other engineering plastics.
Surface finishAs-machined as standard; smooth- or fine-machined for a near-cosmetic surface.
FinishingAnodizing, powder coating, painting, polishing, tapping and inserts — same quote.
Batch sizeFrom a single prototype to an ongoing production run.
Materials
Sourced, machined and finished under one quote. Each material links to the other processes it runs on.
Aluminum→Stainless steel→Carbon & alloy steel→Tool steel→Copper, brass & bronze→Titanium & superalloys→ABS & ASA→Polycarbonate (PC) & PC-ABS→Polypropylene (PP)→Polyethylene (HDPE / UHMW)→Nylon (PA6 / PA66 / PA12)→POM (Acetal / Delrin)→Acrylic (PMMA)→PEEK→High-performance plastics→Engineering & commodity plastics→
All materials & finishes →Choosing a process
CNC vs. injection molding→CNC wins before a mold would pay for itself. Molding wins once you're past that break-even, at thousands of identical parts.CNC vs. 3D printing→Printing wins the fastest prototype and geometry a tool can't reach. CNC wins when the part has to perform: metal strength, tolerance, finish.Not sure yet?→Read the DFM guide for the design calls that move cost the most, whatever the process.
Not tied to one processIf another process fits your part better, we say so and requote it. Asking for a quote commits you to nothing.
Questions
Questions about CNC machining
How much does CNC machining cost?
It depends on four things: the material, the machine time, the number of setups the part needs and the quantity. Setup is paid once per order, so the unit price drops as the quantity grows. Deep pockets, sharp internal corners and tight tolerances on many features push it up. Upload the file and you get the price of every part, with its lead time, in 24–48 hours; the feasibility check on this page gives you a rough idea first.
What tolerances can OperGo hold on a CNC part?
±0.1 mm is our standard tolerance and covers most features without adding cost. If a dimension needs to be tighter, mark it on the 2D drawing: we hold it and price only those features, not the whole part.
What’s the minimum order quantity for CNC machining?
One. We quote and machine single prototypes on the same lines and under the same QC as a production run, so a part validated at quantity one doesn’t need to be re-proven when you scale up.
Do you offer 5-axis machining?
Yes — 3-axis milling, 5-axis milling and CNC turning with live tooling, so a part with features on more than one side doesn’t need multiple setups and the fixturing errors that come with them.
Which file formats do you accept for a CNC quote?
A STEP file for the geometry, plus a 2D PDF drawing for anything the model alone can’t say — GD&T callouts, threads, the dimensions that actually matter. Every CAD package exports STEP; that pair is what we price from.
How fast can you turn around a CNC quote?
Most quotes come back within 24–48 hours, with the unit price and the lead time for every part.
An instant-quote platform rejected my part as unmachinable. Can you make it?
Often, yes — send it. Instant-quote tools reject geometry they can’t read: deep pockets, thin walls, undercuts, tight true-position callouts. We review those parts one by one: within 24–48 hours you get a quote or, if the part can’t be made as drawn, the design change it needs.
What materials and finishes can you machine?
Aluminum, stainless and mild steel, and engineering plastics like ABS and PEEK as standard, finished with anodizing, powder coating, painting or polishing under the same quote — no separate vendor or lead time to coordinate.
What surface finish do CNC parts come with?
As standard, parts ship as-machined — a clean, functional tool finish with faint tooling marks. For a smoother or near-cosmetic surface we specify smooth- or fine-machining, and any coating (anodizing, bead blasting, powder coat, polish) goes on top of that, all under the same quote. Tell us the surface the part actually needs and it's planned into the program, not chased afterward.
What if CNC isn't the right process for my part?
Then it changes — before anything is made. If your geometry, target price or volume line up better with injection molding, sheet metal or another process, we flag it and requote under the right one. Asking for a quote commits you to nothing.
Related capabilities
Get started
Upload your part and get its quote.
Upload one part or your whole BOM.
You get a price and lead time in 24–48 h.
Your parts protected by an NDA.