| Blob A blob is a common 3D printing defect characterized by an unwanted lump of material on the surface of a print. Blobs are often caused by over-extrusion, improper retraction settings, or filament oozing during non-printing moves. They can affect the aesthetic and functional quality of a print, especially in detailed models. Reducing print temperature, adjusting retraction settings, and ensuring the nozzle is clean can help prevent blobs. Advanced slicers also include features like coasting, which stops extrusion slightly before the end of a line, minimizing material buildup. |
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