Inside the Part: CNC Machined 7075 Aluminium Cylinder for Pipeline Pigging
Precision engineering is used in some very different environments, and this latest component takes us inside an area of industry that many people outside the pipeline sector may never have encountered: pipeline pigging. For this project, Tarvin Precision manufactured...
True Position Tolerance Explained for CNC Machined Parts
True position is one of the most commonly used geometric tolerances on engineering drawings, particularly for holes, bores, pins and other features that must align correctly within an assembly. At first glance, it can appear more complicated than a conventional...
Datums on Engineering Drawings: How They Control CNC Machining and Inspection
Datums are fundamental to many engineering drawings because they establish the reference framework used to locate, orient and inspect important component features. They help ensure that designers, machinists and inspectors are all working from the same set of...
Flatness vs Parallelism in CNC Machining: What’s the Difference?
Flatness and parallelism are two common geometric tolerances used on engineering drawings, and although they can look similar at first glance, they control different characteristics of a machined component. Flatness controls the form of an individual surface, while...
CNC Machining Hole Tolerance: Drilling, Reaming and Boring Explained
Holes are among the most common features found on CNC-machined components.They can also be among the most functionally important. A hole may simply provide clearance for a fastener, or it may locate a dowel, carry a bearing, guide a shaft, provide a sealing surface or...
What Does ‘Break All Sharp Edges’ Mean on a CNC Machining Drawing?
“Break all sharp edges” is one of those engineering drawing instructions that appears simple until someone has to decide exactly what it means. For a CNC machining supplier, the intention is usually clear: finished components should not be supplied with unwanted burrs...
Tarvin Precision Supporting the Cheshire Dark Run Again in 2026
We’re delighted to confirm that Tarvin Precision will once again be supporting the Cheshire Dark Run at Bolesworth Castle, raising funds for Hope House Children’s Hospices. Following the success of the first Bolesworth Castle Dark Run in 2025, the event returns on...
CNC Machined Threaded Holes: Depth, Fit and Inspection Explained
Threaded holes are among the most common features found on CNC-machined components. They may be used to attach covers, secure assemblies, locate brackets, mount electronic equipment or connect one precision-machined part to another. Although a tapped hole can look...
CNC Machining Internal Corner Radius: Why Cutter Size Matters to Cost and Lead Time
Internal corner radii can appear to be a relatively minor detail on a CNC-machined component. In practice, they can influence tool selection, machining strategy, cycle time, surface finish and manufacturing cost. The reason is simple: a rotating milling cutter is...
Thin Wall CNC Machining Components: How to Control Distortion and Maintain Tolerances
Thin-walled components can look relatively straightforward on an engineering drawing. In practice, however, removing material from a component until only thin sections remain can create some of the more challenging conditions encountered in precision CNC machining. As...
Tarvin Precision Supports Achievement at Hawarden High School
Tarvin Precision was proud to continue its support for Hawarden High School by sponsoring the school’s 2026 Recognition of Achievement Governors’ Presentation Event, held on Friday 10 July 2026. The presentation event provides an important opportunity to recognise the...