A few simple tricks let you say goodbye to model faults
As the saying goes, "The wood of the ruler must have a program, and the jade of the inch must have a flaw." Although there is no perfect existence in this world, we can try our best to approach perfection and avoid problems that should not have occurred. For example, in the process of printing a model through a 3D printer, misalignment, warping, and faults often occur, which affects the aesthetics of the entire model and the printing experience, and may even affect the success or failure of the model printing. Today, we teach you some solutions to the 3D printing fault problem. Fault phenomenon The working principle of 3D printing is “layered manufacturing, layer by layerâ€. Each layer is formed on the basis of the previous layer. To make the printed model reliable and reliable, it is necessary to ensure that each layer is fully bonded. Together, the influencing factors mainly include the following: 1. The model layer height setting is too high when slicing Most 3D printers have nozzle diameters between 0.3 and 0.5 mm. For example, a machine with a 0.4 mm nozzle but a layer height of 0.5 mm will cause gaps in the material during the stacking process. Although the layer height set by Hongrui Slice Software cannot be larger than the nozzle diameter, many people will set the two parameters to be the same. In fact, this will still lead to faults. Therefore, when setting the layer height, it must be smaller than the diameter of the nozzle. Generally, at least 20% smaller. The nozzle is 0.4mm, and the model is printed after the layer height is set to 0.4mm. FDM uses the characteristics of plastic heating, melting and solidification to complete the model printing. Only when the material extruded by the printing head reaches a certain fluidity and viscosity, and the nozzle is squeezed, it can be firmly adhered to the lower layer. On the surface. If the heating temperature is not enough and the material does not reach the bonding performance, there will be a situation in which the upper and lower layers are separated. Depending on the material, the temperature requirements are different: PLA generally needs to be heated to 210 ° C, ABS generally needs to be heated to 220 ° C - 240 ° C. The printing temperature must be set according to the material when printing. Under normal circumstances, the material manufacturer will give a recommended temperature for printing the material. The actual printing can be fine-tuned according to the specific conditions. Printer nozzle temperature setting interface Since the 3D printed material is melted before it can be extruded, and some materials contain impurities, long-term use can block the nozzle and cause uneven filaments to cause a fault. In this case, the print head can be heated to 220 ° C to extrude the material or use a properly sized hex key or other metal tool to clear the throat. Unblock the print head 4. Printer throat is damaged When the printer throat becomes short due to prolonged wear, a small amount of consumables enter the gap, causing a fault during printing. This phenomenon is often overlooked because it is not obvious, but it will affect the printing effect invisibly. Therefore, we can check if the hose is damaged and replace it when other measures are still not solved. 3D printer throat detail 5. Material quality issues If there is a fault problem in each layer during the printing process or if there are no problems in the machine performance, slicing settings, etc., if multiple models are continuously printed, there will still be a fault phenomenon, that is, the material quality is problematic. Try again after replacing the material directly. The frequency of occurrence of model faults is not very high compared with warping and misalignment. Most of them are caused by poor printing temperature and poor wire output. If the model printed by the user at the time of printing is large and the overall appearance of the fault appears to be harmless, the post-processing can be repaired and beautified without being bothered. Note: If you want to download the model or have more understanding of 3D printing technology and 3D printer, please pay attention to the WeChat QR code below or log on to the official website of Beijing Huitianwei Technology Co., Ltd. 
(Editor)
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