The West-Tech Finishing Blog

Practical insights on anodizing, passivation, surface finishing, specifications, and manufacturing.

Comparison of Type II coloured anodized aluminum components and Type III hard anodized industrial components.

Type II vs. Type III Anodizing: Key Differences

November 4, 2026

Compare Type II sulphuric anodizing and Type III hard anodizing, including colour options, coating thickness, wear resistance, and drawing requirements.

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Black oxide finished precision-machined steel flange on a metal workbench

Black Oxide Coating: Process, Uses, and Limits

October 28, 2026

Explore how black oxide works, where it is commonly used, and what manufacturers should consider when specifying the finish.

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Machined aluminum component on an engineering drawing beside digital calipers and a laptop

Metal Finishing RFQ Checklist: How to Get a Faster, More Accurate Quote

October 9, 2026

Providing the right information upfront helps reduce back-and-forth, supports accurate finishing quotes, and keeps your parts moving toward production.

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Map of North America with illuminated supply-chain connections above a manufacturing facility

Why Manufacturers Should Keep Critical Finishing Closer to Home

October 4, 2026

When qualified capability is available closer to home, keeping critical finishing within North America can make communication, logistics, and problem-solving much easier.

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Black anodized aluminum enclosure with silk-screened POWER, DATA, AUX and STBY labels, a caution notice, and a part number on a shop table

From Anodizing to Identification: Why Silk Screening Matters

September 23, 2026

How silk screening adds clear markings to anodized aluminum components, where it fits in aerospace and industrial applications, and what to include in an RFQ.

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Business jet in an aerospace hangar at sunset with technical drawing overlay

Why Nadcap Matters in Aerospace Metal Finishing

September 16, 2026

What Nadcap accreditation actually means, how it differs from AS9100, and what engineers and buyers should verify before sourcing aerospace metal finishing.

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Masking in anodizing diagram showing silicone plugs, precision tape, liquid masking, and a ready-to-use anodized part

What Is Masking in Anodizing and Why Is It Important?

September 4, 2026

Learn why certain features need to stay free of anodizing, how silicone plug, tape, and liquid masking methods differ, and what belongs on the drawing.

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West-Tech passivation line with stainless steel process tanks and racks of machined components

Stainless Steel Can Still Rust: Here’s Why Passivation Matters

August 31, 2026

Learn why stainless steel can develop rust staining after manufacturing, how passivation removes free iron contamination, and how nitric and citric treatments differ.

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