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Engineering Blog

Technical articles, machining insights, and engineering news from the Oyster-CNC team.

Featured Articles

Precision measurement tools and engineering drawingsTolerances
6 min read

Understanding ISO 2768: When to Specify and When to Rely on General Tolerances

ISO 2768 covers linear dimensions, angular dimensions, and geometrical tolerances for machined parts. We explain the four tolerance grades, when to use each, and how to avoid over-specifying your drawings.

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Aluminium alloy bar stock and machined metal partsMaterials
8 min read

Aluminium Alloys for CNC Machining: 6082 vs 7075 vs 2024

Choosing the right aluminium grade affects machinability, strength, corrosion resistance, and cost. This guide compares the three most common aerospace and engineering alloys we machine at Oyster-CNC.

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CNC machined engineering componentDesign for Manufacture
5 min read

5 DFM Mistakes That Add Cost to Your CNC Parts

Small design decisions — internal corner radii, deep pockets, thin walls, and unnecessary tight tolerances — can double the machining time on a part. Here's what to watch for before you send your drawings.

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