Extrusion & Post
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Stringing problem in PETG 3D printing
Problem Phenomenon
During PETG FDM 3D printing, stringing and hair-like thin filaments are produced when the nozzle moves.
Cause Analysis
Printing temperature is on the high side; melt viscosity is too low and thin filaments are drawn out; retraction parameters are set improperly, with insufficient retraction distance or speed.
Solution
Reduce printing temperature to 220-235°C; increase retraction distance to 4-6mm and speed to 30-50mm/s; enable the wipe function.
Key Takeaway
PETG 3D printing stringing is solved by lowering temperature and optimizing retraction parameters.
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