What is CNC Milling?
Computer numerical control (CNC) milling is a subtractive manufacturing process that uses computerized controls and rotating multi‑point cutting tools to progressively remove material from a workpiece. Initially, milling was a manual task performed by machinists, but with the advent of CNC technology it has become mostly automated. The process can machine a wide range of materials—including metal, plastic, glass and wood—and it’s renowned for producing custom parts with high precision. BACH INDUSTRY AG leverages this technology in Switzerland and abroad to create prototypes, small production runs and complex geometries for customers across Germany, Austria, Liechtenstein, Belgium and several African countries.
Key CNC Milling Processes & Operations
A typical CNC milling process follows four core steps: designing a CAD model, converting the design into a CNC program, setting up the machine, and executing the milling operation. Once the program runs, the cutting tool rotates at high speeds—often thousands of revolutions per minute—and removes material via one of three motions: feeding the workpiece into a stationary tool, moving the tool across a stationary workpiece, or moving both simultaneously.
Different operations deliver different results:
Face milling uses cutters with teeth on both the periphery and face to create flat surfaces and high‑quality finishes.
Plain (or slab) milling employs cutters with teeth on the periphery to remove material across broad surfaces; coarse‑toothed cutters and slower speeds are used for roughing, while fine‑toothed cutters and faster speeds refine the shape.
Angular and form milling create chamfers, serrations and complex contours.
Thanks to these techniques, CNC milling can achieve tolerances from ±0.001 in. to ±0.005 in., with advanced machines reaching ±0.0005 in.—a level of precision vital to aerospace, medical and high‑tech applications.
How do I get a quote and what affects the price?
Which materials can be milled?
We routinely machine aluminum, steel, stainless steel, brass, plastics (including HDPE, UHMW and acrylic), foam, wood, titanium and even precious metals. Some materials (like titanium) require specialised tooling and may influence cost and lead time.
What’s the difference between CNC milling and CNC turning?
In milling, a rotating tool removes material from a stationary (or moving) workpiece; in turning, the workpiece rotates against a stationary tool. Milling is ideal for prismatic parts with pockets and slots, while turning excels at cylindrical shapes. Many parts use both processes, and we offer combined CNC turning and milling services.
How do you ensure safety?
Our technicians follow strict maintenance routines and use proper workholding and tool inspection. We clean chip pans regularly and recommend fire‑suppression systems. Training emphasises tool handling, coolant management and chip disposal.
Precision CNC Milling Services by BACH INDUSTRY AG
As a CNC milling company headquartered in Zürich, BACH INDUSTRY AG operates a modern CNC machine shop capable of precision CNC milling, CNC turning and milling services and prototype CNC milling. We produce custom CNC milling parts from aluminum, steel, stainless steel, brass, plastics (including HDPE and UHMW), foam, wood, titanium and even jewelry alloys. Customers can submit a CNC machining quote online and receive a fast response; our CNC milling service online supports engineers and procurement teams who need rapid turnaround.
Our workshop houses 3‑axis, 4‑axis and 5‑axis CNC milling machines equipped with automatic tool changers and high‑speed spindles. Skilled machinists program and operate the machines to maintain tight tolerances for complex geometries. Whether you require a one‑off prototype or a medium‑volume production run, our custom CNC milling services deliver consistent quality. We serve B2B clients across Switzerland, Germany, Austria, Liechtenstein, Belgium and Africa, and our multilingual support team helps simplify cross‑border logistics.
Quotes & Cost Breakdown
Costs for CNC milling depend on material, geometry, tolerances, surface finish, and production volume. To keep quotes accurate and competitive, we provide pricing strictly on request after a quick technical review of your requirements.
At BACH INDUSTRY AG, we deliver transparent breakdowns for every RFQ. Our online form accepts your CAD model and specifications, and our team responds with a tailored quotation. We supply machining services and parts across Switzerland, Germany, Austria, Liechtenstein, Belgium and Africa, factoring in regional taxes and logistics. Quotes are available in CHF or EUR.
Machine capabilities & typical use cases
| Machine type | Pricing | Use case (examples) |
|---|
| 3-axis CNC mill | On request | Simplified geometries, prototypes, jigs & fixtures |
| 4-/5-axis CNC mill | On request | Multi-surface machining, complex surfaces, tight tolerances |
Comparisons: Milling vs. Other Technologies
Choosing the right manufacturing process depends on part geometry, material and cost targets:
CNC milling vs CNC turning: Milling removes material with a rotating tool and stationary (or moving) workpiece, producing prismatic parts. Turning rotates the workpiece against a stationary cutting tool—ideal for cylindrical parts. Many parts require both techniques, which is why we offer CNC turning and milling services.
CNC mill vs router: A CNC router is often lighter‑duty and better suited to wood, plastics and foam; it generally operates at higher spindle speeds but lower cutting force. CNC mills are rigid and designed for metal, delivering tight tolerances.
CNC milling vs drilling: Drilling creates round holes; milling can perform drilling plus complex contours, slots and pockets.
CNC milling vs laser cutting/3D printing: Laser cutting excels at flat sheet cutting with minimal material waste; CNC milling handles thicker materials and complex 3D surfaces. Additive manufacturing (3D printing) builds parts layer by layer and is excellent for intricate internal features, but CNC milling often provides better surface finish and material properties for end‑use metal parts.
Understanding these differences helps you determine when to rely on milling alone or integrate other processes.
