Machining and Finishing Services

CNC Turning, Machining and Finishing

Precision Machining Services

Our cutting edge machinery includes CNC Machining, CNC Turning and Conventional Machining. We can provide a range of quality finishes, from Chemical Blacking to Electrical Discharge Machining (EDM) and Grinding.

CNC Machining

Large scale capability with the latest 3 and 4 Axis CNC machining services. We use latest CAM and CAD software to choose the most appropriate machining strategy, generating the surface finish and tolerance you require with unparalleled efficiency.

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CNC Turning

CNC Turning

Full CNC turning service up to 250mm diameter. Small batches and less complicated parts can be programmed directly on the machine to ensure a quick turnaround. More complex parts can be programmed offline with the latest CAD/CAM Software.

Conventional Machining

Conventional Machining

For when CNC is not cost effective our conventional machines can be used to repair or refurbish existing parts. We also utilise a range of conventional machines to manufacture fixtures and gauges in-house. Services include: Sawing - Drilling - Turning (with Digital Readout) - Milling (with Digital Readout) - Surface Grinding - Cylindrical Grinding - Welding.


COBA Precision work with you to ensure your components are finished to exacting requirements. We’re capable of finishing and polishing components in-house using a range of equipment. We work with a network of trusted partners to provide some more specialist finishes:

In-house services include:

  • Chemical Blacking, EDM, Wire Erosion, Die Sinking, Small Hole Drilling, Grinding and Surface Grinding

Sub-contracted services include:

  • Heat Treatment – Through Hardening, Case Hardening, Nitride Hardening and Stabilising
  • Surface Treatments – Anodising, Zinc Plating, Chrome Plating, Alochrome and Nickel Plating
  • Grinding – Cylindrical Grinding (up to 2m in length), Internal Grinding, Centreless Grinding, CNC Grinding, Thread Grinding and Honing
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Chemical Blacking

Chemical Blacking

COBA Precision has an in-house chemical blacking facility. The Chemical Blacking process adds an attractive black colour to the surface of steel and iron components with the added benefits of corrosion resistance while guaranteeing no dimensional change.


Electrical Discharge Machining (EDM)

We have invested in several top of the line EDM machines. This allows us to work with complex shapes and extremely hard materials to very close tolerances.

Telephone: +44 (0)116 240 1515