Molds & Tooling
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PETG mold vent groove dimensions unreasonable
Problem Phenomenon
Vent grooves with poor venting effect or poor durability design.
Cause Analysis
Vent groove depth too shallow causing insufficient venting, too deep causing overflow, width insufficient.
Solution
Design vent groove depth at 0.02-0.03mm (PETG viscosity is moderate); width 5-10mm.
Key Takeaway
PETG vent groove dimensions directly affect the balance between venting and overflow.
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