Surface Finishes
Below are some very typical finishes that are required by our customers shown here to give you some guide to what is common to “World Quality Precision Engineers”. They are Internationally recognised scales for finishes by different means of machining.
Generally the better the finish the higher the cost but sometimes the tolerance required calls for a high finish. Consider when choosing tolerances and finishes if working to a budget.
The Super, Fine, Good and General are only meant as a helpful guide for you.
| Centre Line Scale |
Micro Meters Scale |
Spark Erosion Scale |
Grinding B.S. Scale |
Finish Required For |
Finish Required For |
Finish Required For |
Finish Required For |
| “CLA” | “Ra” | “VDI” | “N” | Polishing | Grinding | EDM | Turning / Milling |
| 2 | 0.05 | — | N2 | Super | — | — | — |
| 4 | 0.10 | — | N3 | Fine | — | — | — |
| 8 | 0.20 | — | N4 | Good | Super | — | — |
| 16 | 0.40 | 12 | N5 | — | Fine | Super | — |
| — | 0.56 | 15 | — | — | Good | Fine | Super |
| 32 | 0.80 | 18 | N6 | — | General | Good | Fine |
| 63 | 1.60 | 24 | N7 | — | — | General | Good |
| 125 | 3.20 | 30 | N8 | — | — | — | General |
Our Capabilities
Unique parts for the most demanding situations, from prototypes to full production runs. Our highly experienced designers will support your machining project from start to finish.
Machines
Industry wide we are recognised for our precision CNC machining, advanced infrastructure and engineering excellence
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