Like other filaments, TPU filaments come in a variety of types. But still, printing with TPU is not easy.ĭifficulties arising from the wide variation of TPU filaments As a result, temperature and speed settings can be set to fit TPU, and retraction can be performed to enhance the quality of products. The direct extruder used by Snapmaker allows the extruder and nozzle to be in close proximity to each other, allowing the proper pressure to be applied to even the softest TPU filaments. Generally, higher temperatures, slower speeds, and avoidance of retraction are used. Therefore, it is challenging to print TPU on a Borden-type 3D printer. But the long distance from the extruder to the nozzle makes it difficult to extrude TPU filament, which is soft and cannot be tensioned. Proper pressure must be applied from the extruder to feed the filament out of the nozzle.īowden extruder used in some 3D printers has the advantage of having a small and lightweight head. Why is printing with TPU so difficult? Differences in difficulty between different types of extruders Like PLA, heat resistance is not good, so care should be taken.Supports are difficult to peel off, so it is necessary to create shapes that require as little support as possible. As explained in the next section, printing is technically more difficult than PLA.For more information, check out this article: 3D Printing Filament Storage and Drying: Why and How. Therefore, it requires more attention to storage and drying than other materials. Moisture absorption can cause bubbles or poor flow during printing, which can have a negative impact on products. TPU is a material that easily absorbs moisture.Depending on the application, you can make soft parts like rubber tires or strong, unbreakable parts like gaskets and seals.By adjusting the wall thickness and infill, it is possible to make parts with various characteristics. It is relatively inexpensive, easy to handle, and can produce parts with softness that cannot be obtained by the SLA printing method.TPU is one of the most commonly used materials in 3D printers, because it can be used to make parts with rubber-like elasticity and impact resistance. It also has excellent chemical resistance. TPU (thermoplastic polyurethane) is a soft resin that is resistant to bending, tension, and friction.
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