Material introduction: Nylon PA12 MJF

Nylon PA12 (MJF) with its excellent mechanical properties and detailed surface resolution, is exceptionally versatile and the ideal material for a wide range of applications.

The material has a high impact resistance, due to different geometries it can either be flexible or rigid. The printing technology gives you extensive freedom of design.

By using HP Multi Jet Fusion (MJF) technology, your parts have a higher density, lower porosity and are watertight compared to parts produced with Selective Laser Sintering (SLS). Furthermore the part have homogeneous (isotropic) mechanical properties.

Typical use and our use cases

Complex models, prototypes, architectural models, industrial parts, spare parts, housings

Technology

The 3D print process begins by laying down a thin layer (0,08 mm) of nylon powder on a build platform. Next a print head passes the surface while jetting a fusing agent, where the powder should fuse. Also a detailing agent is applied at the boundaries of the parts to produce sharp and smooth edges. In order to fuse the selected areas, fusing lamps pass the surface. The build platform moves down and the next thin layer is being applied.

[Technical white paper | HP Multi Jet Fusion technology: Schematic of HP Multi Jet Fusion printing process, cross-sectional views]

Available finish

  • Graphite dark grey
  • Dyed black

Material properties

  • Flexible or rigid
  • Heatproof up to 175°C
  • Skin-friendly
  • Watertight
  • Good chemical resistance
  • U.V. stabilized and stable to weather

Short overview of our available materials

3D printed part for oldtimer

Instead of replacing the whole sub-assembly of an oldtimer car, the broken part was replaced by a 3D printed part.

The part has been replicated with CAD and 3D printed in Nylon.

Material: Nylon (MJF PA12)
Dimensions: 8,5×8,5×10 cm

With 3D printing we can replace the majority of broken parts. Plastic and metal parts can be manufactured with this technology.

Small projects 2018

Customized 3D printed parts can be adapted to have a unique design or can be reengineered to meet your requirements.

Une pièce de rechange d’origine n’était plus disponible, mais avec la pièce reconstruite imprimée en 3D, l’auvent pouvait être réparée.

3D gedréckte Stécker kënnen no de Virstellunge vum Client oder de mechanesche Viraussetzungen adaptéiert ginn.

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Spare part for electric sunroof

Our client had an issue with his electric sunroof on his car, the metal slider on one side was broken due to material wear.

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Since he could not find any replacement parts on the market we managed to reproduce the broken part, our engineering team optimized the part by adding material on certain sections of the part. The material we used was stainless steel, which got polished to work properly.

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Stronger than the original: aluminium

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That shiny piece is chromalised plastic and it was to feeble for its function in a shower. On top of that spare parts are impossible to get.

So for our client we made a spare part and it is a lot tougher than the original part because it has been created in 3D-printed aluminium. The file necessary for printing was created with 3D-Scanning technology and CAD-design.

Pièces de rechange imprimées 3D

Voici un exemple qui en illustre tant d’autres. Une petite pièce casse sur un appareil qui n’est plus produit depuis longtemps. Des pièces de rechange sont impossibles à obtenir. Faut-il alors conduire cet appareil à la décharge bien que son remplacement coute peut-être des centaines, voire des milliers.

L’impression 3D permet désormais la production de pièces de rechange. La pièce cassée est mesurée ou scanné pour reconstruire un fichier tridimensionnel. Ce fichier permet alors l’impression d’une (ou plusieurs) nouvelles pièces et ceci dans un grand choix de matériaux, des plastiques aux métaux en passant par les poudres composites multicouleurs.

Dans ce cas précis c’était le bouton du parlophone de la société JNL qui était cassé. Un remplacement aurait couté des milliers d’euros. L’impression était 10 fois moins chère, plus rapide, plus propre, moins bruyante et plus écologique!

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Original avec deux pièces de réchange en nylon noir

Reproduction of church statues

Churches are places to stay open as often as possible. In many cases this may conflict with the valuables housed in a church.

Such is the case with a church in Luxembourg which houses 3 ancient wooden statues.

As a solution it was decided to produce copies of the statues, exhibit the copies and store the precious originals in a safe place.

Due to the age and configuration of the statues, forming a silicon mould on the originals was considered to be too dangerous for these.

Therefore the Musée national d’histoire et d’art (MNHA) asked 3DPrint.lu for an alternative solution involving 3D-Scanning.

First of all some smaller detachable components wore scanned in order to produce samples. The samples were printed in different materials in order to analyses precision and paintability.

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The samples satisfying all requirements, 3DPrint.lu could move on with the statues. Each 3D file of such a statue is combination of 20 to 30 laserscans and is composed of millions of triangles.

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The two smaller statues were printed in Nylon.

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As in Nylon the height of printing was limited to 65 cm, the third and highest statue was printed in stereolitographic resin.

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The project ran to the highest satisfaction of the MNHA. The statues are now being coloured by hand and we hope to present you soon the images of the completed copies.

Jurassic Park au Luxembourg

Les premiers fossiles de dinosaure découverts au Luxembourg viennent de nous être confiés par le MNHN pour en réaliser des scans 3D.

Les scans 3D ainsi réalisés peuvent ainsi servir à la recherche. Réaliser des représentations en coupe et prendre des mesures est plus aisé sur les scans que sur les originaux. D’autre part la communication des scans permet de garder en lieu sûr les originaux.

Voici les originaux:

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Une image du scan réalisé pour la dent de dinosaure:

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Des copies imprimées 3D en matière polyjet très précise:

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Des copies couleur en poudre composite :