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ASA filament

ASA filament is a printing material for 3D printers whose name stands for acrylonitrile-styrene-acrylate. It is a thermoplastic that is very similar in properties to the more familiar ABS material. However, the main difference and key feature of ASA is its high resistance to UV and weathering. Thanks to this, the material does not yellow in the sun, does not become brittle and retains its mechanical properties and colour, which makes it suitable for the production of items intended for outdoor use. ASA is also strong, tough and can withstand higher temperatures than commonly used filaments such as PLA. This means that prints made from it will not warp, for example, in the interior of a hot car. Printing from ASA is more demanding than printing from PLA. It requires higher nozzle and heated substrate temperatures and tends to shrink as it cools, which can lead to the model twisting and peeling away from the substrate, a phenomenon known as "warping". For successful printing, it is therefore recommended to use a 3D printer with an enclosed print area that maintains a stable temperature and prevents drafts. When printing, the characteristic plastic smell and fumes are released from the material, so it is essential to ensure good ventilation of the room. In practice, ASA is used for the production of functional parts exposed to adverse conditions, such as enclosures for outdoor electronics, automotive parts, garden equipment or sports equipment.

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