Weerg Guides

7 min read

MJF, FDM or resin: which 3D printing technology to choose

Weerg staff: Jul 22, 2026

MJF, FDM or resin? It's the first question anyone with a 3D file to produce asks themselves. Each technology offers different performance, materials, tolerances and costs; choosing the most suitable one directly affects production times, budget and the final result of the project. A wrong choice...

7 min read

Traceability and quality in medical 3D printing: Weerg process

Weerg staff: Jul 17, 2026

For a quality manager in the medtech sector, choosing a 3D printing supplier isn't simply a technical assessment, but a decision linked to risk management. Every component produced can enter the medical device's technical file. Every non-conformity can generate a CAPA. Every MDR or FDA audit,...

7 min read

Elongation at break: what it is and why it matters in design

Weerg staff: Jul 15, 2026

Elongation at break is one of the main parameters on material test certificates. It indicates how much a material deforms plastically before breaking under load and is a fundamental parameter for assessing its ductility. For the designer it's an essential piece of data: it makes it possible to...

7 min read

Biocompatibility and certifications in medical 3D printing

Weerg staff: Jul 10, 2026

Medical 3D printing has gone, in just a few years, from an experimental laboratory technology to a well-established production solution. Custom surgical instruments, orthopaedic guides, personalised prostheses, diagnostic components and single-use devices are today increasingly often made through...

6 min read

Polyamide: Types, Properties and Industrial Applications

Weerg staff: Jul 8, 2026

Polyamide, commercially known as nylon, is one of the most widely used engineering polymers in industry.

In this guide, we examine the main types of polyamide (PA6, PA66, PA11, PA12 and filled grades) their key properties and the practical criteria for selecting the right grade.

8 min read

Materials for aerospace components: a guide to making the right choice

Weerg staff: Jul 3, 2026

Choosing the most suitable material for an aerospace component is one of the most delicate design decisions. Every gram affects fuel consumption, every limitation in thermal resistance can compromise suitability for certification, and every choice has direct consequences for the airworthiness...

6 min read

Copper alloys: classification, properties and selection criteria

Weerg staff: Jul 1, 2026

Copper alloys are one of the most versatile groups of materials available to designers: they combine copper’s conductivity and corrosion resistance with mechanical strength and machinability that pure copper could never achieve. There are hundreds of standardised grades, from free-machining brasses...

4 min read

Tensile Test: A Complete Guide for Engineers and Designers

Weerg staff: Jun 24, 2026

The tensile test is the most widely used mechanical test in the world for characterising materials. A single test provides the data that every engineer uses on a daily basis: elastic modulus, yield strength, tensile strength and ductility.

In this article, we examine what the tensile test is, how...

3 min read

What is Tensile Strength and How is it Calculated

Weerg staff: Jun 17, 2026

Tensile strength is one of the most important mechanical properties in industrial design and material selection. It indicates the ability of a material to withstand forces that tend to elongate or fracture it.