High-Speed Cooling Fans Cooling fans play a vital role in FDM 3D printing, especially when printing with PLA or small intricate parts. High-speed cooling fans improve layer solidification, reducing sagging, stringing, and warping. However, excessive cooling negatively affects materials like ABS, which needs gradual cooling to prevent cracking. Many users upgrade to dual-fan or high-CFM (cubic feet per minute) fans for better airflow. |