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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

Iron-Carbon Diagram

4 min read

Iron-Carbon Diagram: What It Is, Phases and How to Read It

The iron-carbon diagram is one of the most important tools in metallurgy and metallic materials design. It is used to understand how steels and cast irons behave as a function of temperature and carbon content.

Understanding the iron-carbon diagram is essential for choosing the correct material,...

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UL94 v0

4 min read

UL94 and Blue Card: Certifications and Flame Retardant Materials

When designing components for sectors such as automotive, electronics, industrial, UAV, or medical,materialselection cannot be based solely on mechanical properties. It is essential to also consider safety regulations and certifications, such as UL94 and the so-called Blue Card (UL Yellow Card).

...

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3D printed parts made of TPE

3 min read

TPE: What Is a Thermoplastic Elastomer and How It Is Used

TPE (Thermoplastic Elastomer) is a class of polymer materials that combines the elastic properties of rubber with the processability of thermoplastics.Thanks to this unique combination, TPEs are increasingly used in sectors such as automotive, electronics, consumer goods, medical applications, and ...

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Metallographic Analysis

3 min read

Metallographic Analysis: Microstructure and Quality Control

Metallographic analysis is a fundamental technique used to study the microstructure of metals and alloys. By observing a specially prepared sample under a microscope, it is possible to assess:

  • material quality
  • internal defects
  • heat treatments
  • phase distribution
  • grain size
  • causes of fracture

It is...

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Thermoplastic and thermosetting polymer structure

2 min read

Thermoplastic and Thermosetting Polymers: Differences and Uses

Polymers represent one of the most versatile families of materials in modern industry. Within this category, the fundamental distinction is between thermoplastic polymers and thermosetting polymers: two classes with profoundly different behaviour in relation to heat, processing and final use.

...

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Yield Strength

3 min read

Yield Strength: Elastic Limit of Materials

Yield strength is one of the most important mechanical properties of materials, especially in engineering, structural design, CNC machining and 3D printing.It defines the limit beyond which a material begins to deform permanently. Knowing it is essential for designing safe, reliable and durable...

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metals

4 min read

Uses of Metals: Types, Classifications and Applications

Metals are among the most important and widely used materials by humankind.From prehistory to Industry 4.0, they have supported technological development thanks to unique properties such as mechanical strength, conductivity, ductility and durability.

In this guide we will look at:

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Graph on the coefficient of friction

2 min read

Coefficient of Friction: what it is and why it is essential

The coefficient of friction (μ) measures the resistance to sliding between two surfaces in contact. It is a key parameter in mechanical design because it affects wear, energy efficiency, accuracy, noise and component lifetime, both in industrial 3D printing and in CNC machining.

Understanding and...

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CBAM

3 min read

CBAM Regulation: What It Is, How It Works and Weerg Compliance

The CBAM regulation (Carbon Border Adjustment Mechanism) represents one of the key pillars of the European strategy for industrial decarbonisation and for protecting the competitiveness of companies that produce sustainably within the European Union.

Introduced by the European Union, CBAM has a...

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3D printed nylon piece

3 min read

Nylon: Uses, Industrial Applications and Advantages

Nylon is one of the most widely used plastic materials in the world.Thanks to its combination of strength, light weight, flexibility and durability, it is used in sectors ranging from clothing to mechanical engineering, from automotive to 3D printing.

In this 2026 guide you will discover:

1. What...

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