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The Weerg Blog collects up-to-date articles on 3D Printing and CNC Machining.

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Materials and Finishes

304 and 316 stainless steel parts

2 min read

Stainless Steel 304 and 316: Comparison Between the Two Grades of Stainless Steel

Stainless steel is one of the most widely used materials in modern industry thanks to its corrosion resistance, durability, and versatility.Among the most common alloys are two main types: stainless steel 304 and stainless steel 316.At first glance, they may appear similar, but they differ in ...

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Two 3D printed pieces: one in PLA and one in ABS

2 min read

PLA vs ABS: Technical Comparison Between FDM 3D Printing Materials

In the world of FDM (Fused Deposition Modelling) 3D printing, material selection is a key factor in determining the quality, functionality, and longevity of the final part. Among the most widely used materials are PLA (Polylactic Acid) and ABS (Acrylonitrile Butadiene Styrene).

While PLA is often...

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PPS CF Joint

2 min read

PPS CF: The New High-Performance Material for Weerg 3D Printing

Starting today, Weerg expands its range of FDM 3D printing materials with the introduction of PPS CF (carbon fiber-reinforced polyphenylene sulfide), a carbon fiber-reinforced engineering polymer that offers exceptional mechanical strength, thermal stability and stiffness.

Weerg expands its range...

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Nylon PA11 second generation piece

2 min read

Nylon PA11 for MJF 3D Printing: 2025 Guide to the Second Generation

HP Multi Jet Fusion (MJF) 3D printing technology continues to evolve through the introduction of new high-performance materials — and leading the way is the new second-generation Nylon PA11.This material marks a significant step forward compared to the previous version, offering greater...

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aerospace annealed peek

3 min read

Annealing: What It Is, How It Works, and Why It Matters

The term annealing refers to a heat treatment used to modify the physical and mechanical properties of a material.From metals to polymers—and even 3D-printed parts—annealing is a key step for improving strength, ductility, and dimensional stability.

In this guide, you’ll learn what annealing is,...

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Polyoxymethylene Copolymer

1 min read

POM‑C: What Is Polyoxymethylene Copolymer and Why Choose It?

POM‑C, also known as polyoxymethylene copolymer or acetal resin, is a high‑performance engineering plastic material. Used in mechanical, fluid‑handling and electromechanical applications, thePOM‑C material offers an ideal balance of stiffness, smooth sliding (low friction), dimensional stability...

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ten heaviest metals

3 min read

What is the heaviest metal? Guide with rankings and facts

When discussing the heaviest metal in the world, we must first clarify what we mean by “heavy”. In chemistry and materials science, a metal can be considered “heavier” in two main ways:

  • Density – how much mass is contained in a given volume (g/cm³).

  • Atomic mass – the average weight of the atoms...

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Two materials: one isotropic and the other anisotropic

2 min read

Isotropy and anisotropy in materials

The mechanical orientation of materials is a critical factor in the design of components for 3D printing and CNC machining. The distinction between isotropic vs anisotropic behaviour directly affects structural performance, reliability and costs.

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Titanium parts

3 min read

Titanium: what is titanium, properties, alloys and main uses

Titanium is considered one of the most high-performing metals known to humankind. Its reputation derives from the rare combination of two qualities in a single material: strength and lightness. This balance makes titanium indispensable in fields where maximum performance is required without...

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carbon fibre piece and aluminum piece

3 min read

Which is stronger: aluminium or carbon fibre?

In materials science and engineering, particularly in cutting‑edge fields such as aerospace, motorsport, elite sport and high‑end cycling, the question of whether aluminium or carbon fibre offers superior strength arises frequently and has genuine relevance. To provide a comprehensive and...

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