CNC Milling

Computer numerical control milling is a manufacturing process in which a material (such as metal or plastic) is cut using a specialised machine called a mill.

Our CNC milling includes

Precision Thread Milling

Small diameter metal projects within the oil, gas, paper and incineration industries have called for the latest addition to the equipment and services we offer.

Our high specification CMZ CNC Lathe machine has integrated air-cooled spindle motors which eliminate the need for belts and their resulting pressure. The load capability is therefore up to 500 times bigger, and the operation is smoother, more powerful and less noisy – leading to a superior, accurate surface finish. This is especially suitable for small batch production and John D Hotchkiss Engineering have used the CNC Lathe to produce large quantities of small conveyor wheels for the incinerating market, as well as paper mill roll journals.

Face Milling

Face milling is a regular job that we carry out on our CNC milling machines. One such job involved the milling of 150 steel plates (part of a larger order of 1500 plates) for one of our construction industry customers.

End Milling

This is our speciality! End milling is incredibly versatile and accurate. One interesting project that we carried out involved oil coolers for the off shore oil industry. We were required to accurately mill the cooler so that all sides were in-line and true to each other.

Shell Milling

Shell milling accurately removes compounds according to customer specifications. Our most popular type of shell milling is machining a mating face of a component, but we can also provide flat milling, concave milling and chamfers. One of the main benefits of our CNC milling machines is that they maximise the efficiency when large parts of material need to be removed quickly and therefore reducing waste dramatically. 

Gun Drilling

Gun drilling enables you to drill long distance holes at very accurate diameters without bowing or dipping off the true path. A typical project for the incineration market required a 12mm diameter hole to be drilled 2 metres deep along a 6-metre auger shaft.