Mollart Cox was originally founded as a specialist deep hole drilling, boring and gun drilling company — and this remains a key part of our operation today. With 8 dedicated drilling machines and decades of experience, we deliver exceptional accuracy on even the most challenging parts.
Deep hole drilling is the most reliable method for creating precise, single or multiple bores in large or complex components. We regularly achieve Total Indicator Readings (T.I.R.) of ≤ 0.002”, making us a trusted supplier across high-stakes industries like Oil & Gas, Nuclear, Hydraulics and Defence.
We are specialists in the production of multi-bore components, where maintaining parallelism, concentricity and T.I.R. is critical. To achieve this, we use a combination of drilling methods and custom-designed tooling, all developed and manufactured in-house by our engineering team.
Whether it’s a simple straight bore or a complex multi-step drilling operation, we bring together the right tooling, fixturing and experience to deliver precision from the first cut. Our ability to handle both large and long parts — while maintaining fine tolerances — sets us apart in the UK machining landscape.
