![]() ![]() Therefore, you must find ways to avoid them. Of course, a sight of these blobs and zits is not great to look at, especially that we try to produce 3D prints that are flawless and high quality as much as possible. Example of blobs and zits in a finished print. However, if the retraction or other settings are not chosen optimally, and the nozzle oozes a little during travel, a blob may be placed at the start of or inside a sheet. When this happens, it results in a blob, which is caused by a brief burst of over extrusion. When a layer is finished, the filament in the print head is still under pressure, resulting in a blob. Closer examination reveals that each blob belongs to a single sheet. Many 3D prints have zits and blobs that are evenly distributed across the piece. Overall, these marks are what you call blobs and zits. Furthermore, it’s noteworthy to mention that the extruder will eventually return to this particular mark when the printing is completed. These marks represent the starting point where the extruder has started printing on. Close up of blobs and zits in a print surface. ![]() In addition, a tiny mark on the surface of the outer shell of your 3D printed object can be visible if you look closely.
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