Modern Cutting Technology

    For a Full Range of Machining Requirements

    Machining facilities include EDM, CNC wire cutting, CNC grinding, honing, CNC milling, lapping and CNC turning.

    “We Machine the Hard Stuff”

    Fast, Flexible Turnaround to Meet Customer’s Exact Specifications

    Our technical team has amassed a wealth of skill, knowledge and know-how turning designers’ and engineers’ rigorous requirements into economically viable solutions. Our expert engineers select the optimum process to suit specific needs.

    Program-manage fully machined / engine ready components from barstock / castings / forgings to finished components for aerospace, automotive, power generation, oil & gas, food, and steel.

    Wall Colmonoy has an ongoing commitment to high quality manufacture and with its on-site laboratory and test facilities offers certification to national and internationally recognised standards. Each machined component goes through a reassuringly stringent inspection process before final delivery. We maintain the quality assurance of ISO 9001.

    Our new state of the art machining 23,500ft2 facility was officially opened in May 2012 by Wales’ First Minister, Rt. Hon Carwyn Jones A.M. Read the announcement here.


    Components manufactured from centrifugal and sand castings are proof machined prior to precision finishing to drawing. Bushes and sleeves for power generation valves, galvanising steel sheet equipment and piston rings for marine engines are produced on these machines.

    • Working Diameter: Ø25mm – 650mm
    • Working Length: 100 – 600mm
    • Tolerance: ± 1.0mm
    • Surface Finish: 3.2Ra – 6.4Ra
    • Weight: Max. 350kg


    Precisely machined components are finished to extremely exacting dimensions on the most modern machining centres which are fully equipped with in-line measuring probes. This equipment permits finishing of components consistently and repeatedly to the most exacting tolerances. Can hold tolerances of 0.010mm.

    CNC Turning Cell

    • Working Diameter: 10mm – 845mm
    • Working Length: Max. 2000mm
    • Tolerance: ± 0.05mm
    • Surface Finish: 0.4Ra – 0.8Ra
    • Weight: Max. 300kg

    CNC Large Turning Cell

    • Working Diameter: Ø3.0mm – 554mm
    • Working Length: Max. 2000mm
    • Tolerance: ± 0.05mm
    • Surface Finish: 0.8Ra – 1.6Ra
    • Weight: Max. 300kg


    The Hurco 5-Axis CNC Milling Machine benefits from an adjustable, movable Trunnion bed, allowing for flexible cutting position and versatility with machining full 5 radii to a high level of repeatability and reproducibility. This is achieved using WinMax® Software for fast effective programming of complex radii and compound angels, UltiMotion® software to reduce overall cycle time, whilst enhancing surface finish. Combined with a 40-piece tooling station this investment reduces overall cost and lead-time for our customers.

    The VMX60Ui boasts maximum working area of Ø500mm and a maximum table load of 400kg.

    • Work-piece dimensions (Max. travel): X: 1524mm, Y: 660mm, Z: 520mm
    • Working Area: Max. Ø500mm
    • Weight: Max. 400kg


    Components requiring grinding are finished on our CNC Grinders, achieving extremely fine tolerances to better than 0.02mm (down to 0.005 microns) and high surface finish (surface finishes of 0.1 Ra). Components include parts for pumps with high processing pressures and which demand accurate metering of chemical products.

    Conventional Cylindrical Grinding

    • Working Diameter: 300mm
    • Working Length: 685mm
    • Tolerance: ± 0.02mm
    • Surface Finish: 0.1Ra
    • Weight: Max. 30kg

    CNC Cylindrical Grinding

    • Working Diameter: 300mm
    • Working Length: 650mm
    • Tolerance: ± 0.10mm
    • Surface Finish: 0.8Ra
    • Weight: Max. 30kg


    Many components are specified to extremely low micron surface finishes for customers requiring extremely smooth, flat component surfaces. These are achieved using our state-of-the-art honing and lapping equipment.


    • Working Diameter: 25.4mm – 740mm
    • Working Length: Max. 600mm
    • Tolerance: ± 0.01mm
    • Surface Finish: 0.2Ra
    • Weight: Max. 300kg


    • Working Diameter: 1000mm
    • Working Length: 400mm
    • Tolerance: ± 0.01mm
    • Surface Finish: 0.06Ra
    • Weight: Max. 300kg


    Machining permits complex profiles in wear-resistant materials to be produced cost-effectively and to high precision.

    Wall Colmonoy’s wire cutting machines enable components from a few grams to 3 tons to be produced to finished drawing. Cast components cut on our wire machines include bushes, gears, pumps, plates, screws and more from industries such as food, pump & valves, steel, oil & gas, rubber and automotive.

    Electro-Discharge Machining (EDM) Sinking

    • Work-piece dimensions (Max. travel): 550mm x 370mm x 310mm
    • Surface Finish: 4.8Ra
    • Tolerance: ± 0.10mm
    • Weight: Max. 1000kg

    Electro-Discharge Machining (EDM) Wire-Cutting

    • Work-piece dimensions (Max. travel): X: 800mm, Y: 600mm, Z: 800mm
    • Surface Finish: 0.4Ra
    • Tolerance: ± 0.025mm
    • Weight: Max. 3000kg

    For measurements outside of the typical ranges above, please enquire.


    Wall Colmonoy Limited
    Darren House
    Alloy Industrial Estate
    Pontardawe, Swansea,
    Wales (U.K.) SA8 4HL
    T: +44 (0) 1792 860647