Lines on the Side of Print
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A well-printed 3D model should have smooth, consistent side surfaces, composed of numerous individual layers. However, if one of these layers does not print correctly, it can cause visible lines or ridges on the sides of your part. Often, these defects appear in a repeating pattern, such as once every 12 layers.
Common Causes and Solutions:
Inconsistent Extrusion
One common cause of side lines is inconsistent extrusion, often due to poor filament quality. If the filament diameter varies even slightly, it can lead to inconsistent extrusion width, creating visible lines on the print’s sides. For instance, a 5% variation in filament diameter could result in a 0.05mm difference in extrusion width, causing noticeable ridges. To ensure smooth side walls, use high-quality filament with tight tolerances, such as RAW3D. Refer to the ‘Inconsistent Extrusion’ article for more information on extrusion issues.
Temperature Variation
Temperature fluctuations in the extruder can also cause lines on the side of your print. Most 3D printers use a PID controller to regulate temperature, and if this controller is not properly tuned, it can cause cyclical temperature variations. The plastic flow can change as the temperature fluctuates, leading to visible ridges. Ideally, the extruder temperature should be stable within +/-2 degrees. Monitor your extruder’s temperature using your printing software’s control panel, and if it fluctuates by more than 2 degrees, recalibrate the PID controller. Consult your printer’s manual for specific calibration instructions.
Mechanical Issues
If neither inconsistent extrusion nor temperature variation is the cause, there may be mechanical issues affecting your print. For instance, a wobbling or vibrating print bed can cause the nozzle position to vary, resulting in uneven layers and side ridges. Additionally, issues with the Z-axis threaded rod, such as backlash or improper motor controller settings, can affect layer consistency. Ensure all mechanical components are properly aligned and functioning to avoid these issues.