Mill-Turn Machining

Turning and milling in a single setup. Fewer operations and tighter part-to-part consistency for components that would otherwise cycle through multiple machines.

Mill-Turn Machining

One Machine.
The Whole Part.

Mill-turn machines combine turning and milling on one platform. A part that would normally move through a lathe, then a milling center, then back for finishing can be completed in a single setup, holding tighter tolerances across the full feature set because the part never leaves the machine.

For programs with cylindrical or rotational features that also require milling, cross-holes, or angled surfaces, mill-turn machining reduces setup variation and shortens lead time without trading off dimensional control.

Douglas Machining Services in Winona, Minnesota is the platform’s primary mill-turn specialist, running nine multi-tasking mill/turn machines. The company has built its reputation around this process and serves both industrial and specialty industries with short lead times and high responsiveness on demanding part geometries.

Compass Facilities That Offer
Mill-Turn Machining

Including 9+ Axis, 3D & 5-Axis Machining

Accu-Tool
Apex, NC

Advanced Machining & Tooling
Salisbury, NC

Douglas Machining Services
Winona, MN

Gray Manufacturing Technologies
Denver, NC

R&D Machine
Oldsmar, FL

Mill-Turn Machining

Applications Well Suited for Mill-Turn

  • Aerospace structural fittings and housings that combine turned bores with milled faces
  • Hydraulic and pneumatic manifolds
  • Medical device shafts, connectors, and valve bodies requiring mixed feature profiles
  • Industrial automation components with rotational and milled feature requirements
  • Semiconductor process equipment parts with tight diametric and positional tolerances
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mill-turn machine

Mill-Turn Machining

Production Capacity That Reduces
Program Risk

When a mill-turn program grows beyond what one facility can sustain, Compass Precision distributes volume across facilities running compatible equipment. Programs that grow from prototype to sustained production do not move to a different supplier. The routing stays inside the platform, and the quality standard does not change.

LocationMachiningTurningEDMSecondaryMetrologyFabricationCertifications
3-Axis4-Axis5-AxisHorizontalAutomationCNCMill/TurnSwissHole PopperSinkerWireGrindingHeat TreatFinishingCMMSPCVisionAssemblyBendingLaserStampingWeldingAS9100DISO 9001:2015CMMCITAR
Accu-Tool
Apex, NC		●●●●●●●●●●●●●●●●●●●
Advanced Machining
Salisbury, NC		●●●●●●●●●●●●●●●●○●
Bergeron Machine
Westford, MA		●●●●●●●○●
Douglas Machining
Winona, MN		●●●●●●●●●●●●
Gray Manufacturing
Denver, NC		●●●●●●●●●●●●○●
Pocasset Machine
Bourne, MA		●●●●●●●●
Quality Products
Charlotte, NC		●●●●●●●●●●●●●●●●●○●●●
R&D Machine
Oldsmar, FL		●●●●●●●●●●●●●●●
Strom Manufacturing
North Plains, OR		●●●●●●●●●○
Tri-Tec Industries
Charlotte, NC		●●●●●●●
Trutron Corporation
Troy, MI		●●●●●●●●●●●●●●●●●●

Mill-Turn Machining

Not Sure Which Mill-Turn
Capability Fits Your Program?

With mill-turn expertise across the Compass Precision platform, let’s work together to identify the facility best suited to your requirements, production volumes, and delivery expectations.

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