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Home » 3D Printing Materials » SLS technology » SLS PA12 GF
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SLS PA12 GF is a glass-filled polyamide (nylon) material manufactured using Selective Laser Sintering (SLS) technology. Designed for mechanical testing and functional applications, it combines the design freedom of additive manufacturing with enhanced rigidity and dimensional stability.
This thermoplastic material is particularly suited to parts that must withstand mechanical loads and elevated temperatures while maintaining their geometry and performance. It also offers good chemical resistance and low moisture absorption, making it suitable for demanding industrial environments.
SLS PA12 GF complies with USP Class VI requirements and is compatible with autoclave sterilization processes.
SLS PA12 GF is designed for applications that require excellent rigidity, dimensional stability, and resistance to elevated temperatures. Its glass-filled formulation makes it particularly suitable for functional parts that must maintain their shape under mechanical or thermal loads.
Automotive & Sports
Covers, housings, and sports equipment.
Rigid parts
Components requiring excellent rigidity and dimensional stability.
Thermal constraints
Parts designed to withstand elevated temperatures and thermal loads.
Functional prototyping
Complex prototypes for functional, form, fit, and assembly testing.
Series production
Rapid manufacturing for small and medium production runs.
SLS PA12 GF is particularly well suited for projects that require parts to be tested and used in real-world conditions. Its combination of excellent mechanical rigidity, dimensional stability, and thermal resistance allows engineers to produce functional prototypes that closely represent the performance of the final product. This makes it an effective material for evaluating mechanical behavior, validating designs, and confirming that parts meet functional requirements before moving into production.
Beyond prototyping, SLS PA12 GF is suitable for rigid components that must maintain their shape and performance under mechanical stress or elevated temperatures. Its high dimensional stability and resistance to thermal loads make it a reliable choice for demanding applications where structural integrity is essential. Combined with the repeatability of the SLS process, these characteristics also support the rapid production of small and medium series parts, providing a practical solution for both development and manufacturing needs.
The printing price of your design is calculated automatically the moment it is uploaded. As you modify your object (changing material, finishing, size, changing the quantity or hollowing feature, etc.) you will note that the price changes automatically. The pricing is based on a series of factors, including total volume, object size, and bounding box, to name a few.
For more information, check 3d Prod’s pricing page.
SLS PA12 GF is printed using Selective Laser Sintering. The SLS printing process uses a highly specific laser that sinters thin layers of our glass reinforced nylon powder together one layer at a time. After each round of lasering, the printing bed is lowered and another layer of powder is evenly swept across the top for another round of sintering. This process is repeated until the object is completed.
Here are all options available after the SLS 3D printing process:
Standard layer thickness: 100 µm
| Accuracy | Norme NFT 58000 Normal class (category 3)
|
| Maximum size | 500x500x400 mm |
| Minimum wall thickness (flexible) | 1.5mm |
| Maximum wall thickness* | 9mm* |
| Minimum wall thickness particular design aspects | 2mm |

* We do not recommend wall thickness above 9mm as thicker walls can create manufacturing issues, such as deformation, surface aspect issues – Hollowing your parts should solve this issue. Feel free to contact us if you need help to proceed with making your part hollow.
The walls of your design must adhere to a minimum thickness of 1.5mm in order to guarantee the structure will not break. If the walls of your model are less than 1.5mm, you can add a support structure to maintain stability.
For an object that is sure to be solid, a minimum thickness of 2 mm is recommended.
Sculpteo offers an online solidity check tool which highlights parts of the print that may be too thin for a print. From there you are able to tweak your design in order to create an object that is an appropriate thickness. To use it, you just need to upload your 3D file, select your material and click on “Verification” tab.
It is also important to keep in mind that the object is to be printed into real life. Thus if a thin aspect is supporting something that is too heavy for it, it may break – even though it is possible within the physics provided by your 3D modeling software. We recommend adding a bit of thickness to the places that will get a lot of handling, or that support the most weight.
Do not forget

Keep in mind that our solidity check tool does not detect physical aberrations such as floating parts, unstable position, parts supporting too much weight relative to their thickness, etc. Particular care must be given to the geometry of your design and the most stressed parts must be thickened.
| Minimum size of details | 1 mm |
| Minimum size of text | 1 mm |
| Enlargement ratio | 1/1 |

A detail’s minimum precision is mainly determined by the resolution of our printers. However, during the cleaning process, a fine layer of detail can also be lost. In order for a detail and text to be visible we recommend following our recommended sizes at the very least. To ensure a better powder removal (thus a better detail precision), the width of your details must be at least as big as depth.
| Enclosed parts ? | Yes |
| Interlocking parts ? | Yes |

Our SLS PA12 GF material has the ability to be printed for some complex designs. An example of a complex design is a volume enclosed within another volume or with articulations. Our glass-filled Nylon 3D printers have the ability to print a fully interlocked object out of the printer, with no support structures to remove.
| Minimum spacing between fixed walls | 0.5 mm |
| Minimum clearance between parts | 0.5 mm |

For a successful 3D print a minimum clearance between objects is required to allow the excess of material to be sand blown out. If this space is not left within the design, the object will be a solid. This is particularly important for articulated objects – as the space left between the walls will define the object’s ability to move.
Clearance should be at least 0.5 mm and depends on your object’s size. For big sizes, the clearance should be greater. The heated zone of your object depends on the size, the larger the object the more time it will be exposed to high temperature: if the space left between the walls is too small, it will be weld because of heat spreading.
| Assembly ? | Yes |
| Minimum space | 0.5 mm |

Objects printed in Nylon PA12 Glass-filled can be printed to be assembled. As long as a width of at least 0.5 mm is left between the different parts of the object.
| Hollowing ? | Yes |

Our online hollowing optimization tool has the ability to greatly reduce the price of a print by reducing the amount of material used.
Using the tool requires adding two holes to your model, which will serve as the drain for the excess powder material within the object. The minimum size of these holes is determined by our website. Otherwise it is possible to hollow your object manually in your 3D modeling software.
| Files with Multiple Objects? | No |

It is not possible to 3D print a 3D file containing several objects with SLS PA12 GF.
With Sculpteo’s online 3D printing service you’re just a few clicks away from professional blue PA12 3D printing. Your 3D model is printed with the highest quality and delivered straight to your door.
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