Material Drying
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ASA FDM Bubbles and Filament Moisture
Problem Phenomenon
【Problem Phenomenon】ASA filament printing extrudes with bubbling sound, surface pitting and poor layer lines
Cause Analysis
ASA filament after moisture absorption printing moisture vaporizes into bubbles; filament exposed long-term after opening has excessive moisture content; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Filament dried at 70-80℃ for 4-6h before printing; dry box storage take as used; damp filament dried before reuse; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA filament fears moisture, drying plus dry box storage is standard; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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