Extrusion & Post
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PLA 3D Printing Edge Warping
Problem Phenomenon
PLA printed part corners warp and detach from the platform, especially severe in large-size printing
Cause Analysis
PLA printing cooling shrinkage generates internal stress, and stress concentrates at corners causing edge warping; insufficient platform temperature, poor first-layer adhesion, and environmental airflow all aggravate it; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
①Heated bed temperature 50-60℃ to enhance adhesion; ②Slow down and thicken the first layer; ③Add a skirt or brim to increase the adhesion area, and enclose the chamber to prevent airflow; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PLA edge warping is the game between shrinkage stress and adhesion; heated bed, first layer, skirt—the three axes; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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