Engineering blog
Design-for-manufacturing guides, tolerance references and material selection notes from our process engineers.
12 Ways to Reduce CNC Machining Cost Without Changing the Function
Where the money actually goes in a machined part, and twelve specific changes — setups, radii, tolerances, material form, batch size — that reduce it without compromising the design.
A DFM Checklist for CNC Machined Parts: 18 Checks Before You Release
The manufacturability issues that most often send a drawing back — internal radii, deep pockets, thin walls, thread depth, tool access and datum schemes — with the numbers that make them go away.
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CNC Machining Tolerances: A Practical Guide for Design Engineers
What ±0.1 mm, ISO 2768 and ±0.005 mm actually cost you, which tolerances are free, and how to mark a drawing so the shop quotes what you meant.
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From Prototype to Production: Making the Transition Without Re-Qualifying
What changes between a one-off machined prototype and a 5,000-piece release, when to switch process, and how to keep the documentation chain intact so the first production lot is approved first time.
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How Thin Can You Machine? Wall Thickness Limits and How to Reach Them
Why thin walls deflect, chatter and distort, the realistic minimums by material, and the fixturing, toolpath and stress-relief techniques that make 0.8 mm walls repeatable.
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Anodising Type II vs Type III: Which One Does Your Part Need?
Coating thickness, hardness, dimensional growth, colour options and cost compared — plus how to allow for build-up on toleranced features and threads.
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GD&T Basics for Machined Parts: The Six Symbols That Matter Most
Position, flatness, perpendicularity, concentricity, profile and parallelism — what each controls, how it is measured, and why ± coordinates give you a smaller tolerance zone than you think.
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STEP, IGES, Parasolid or STL? Which CAD File to Send Your Machine Shop
What each format carries, what it loses, why STEP AP214 is the safe default, and why sending an STL for a machined part almost always costs you money.
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Surface Finish Explained: Ra, Rz and What They Mean on a Machined Part
How surface roughness is measured, what Ra values each process delivers, when texture affects function rather than appearance, and how to specify finish so the result is repeatable.
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