CNC Turn-Mill Machining

Turned and milled features produced in one coordinated process.

Turn-mill machining suits components built around rotational geometry that also require flats, cross holes, slots, off-centre holes or milled profiles. We review the complete drawing before selecting the setup.

For parts that need more than conventional turning.

Feature relationships, tool access, diameter, length, material, tolerances and quantity all affect whether turn-mill is the practical route. A STEP file can support an initial quotation; critical dimensions, threads, fits and inspection points should be confirmed before production.

Keeping turned and milled features within a coordinated process can reduce transfers between machines and help control the relationship between features. The actual route is confirmed from the part geometry rather than assumed from its name.

Typical turn-mill features

  • Flats on shafts and cylindrical parts
  • Radial and cross-drilled holes
  • Slots, keyways and milled profiles
  • Off-centre holes and indexed features
  • Threads combined with milled details

Common materials

  • 6061-T6, 6063-T5 and 7075-T6 aluminum
  • 304 and 316 stainless steel
  • H59 and H62 brass
  • 12L15, Q235/Q235B and 20# steel
  • POM, PA6 and PA66 engineering plastics

Useful RFQ details

  • STEP/IGES file and 2D drawing if available
  • Material and quantity
  • Critical feature relationships
  • Threads, finish and inspection scope
  • Delivery country and required trade term

When turn-mill makes sense.

Turn-mill is considered when a rotational part also carries indexed or milled details that would otherwise require additional setups. It is not automatically the best route for every turned component.

We compare geometry, tolerance stack and order quantity during quotation, then confirm the machining route that fits the actual part.

Send the part file and we will review the machining route.

Request a quotation