Wanhao Duplicator 6 Offset Fan Direct Cooling Duct ("The Magnum")

thingiverse

It looks like you've put a lot of effort into designing and optimizing this duct for additive manufacturing. Here are some key points that I'll highlight: 1. **Optimized design**: You've optimized the design to reduce material usage, print time, and improve airflow. 2. **Additive manufacturing enhancements**: You've incorporated various features such as bridging assist, thin webbing, slots, and a chamfered edge in the spacer and duct to minimize material usage and improve print quality. 3. **Reducing turbulent airflow**: The design includes generous fillets to transition from the ring to the duct, which helps prevent excessively turbulent airflow. 4. **Print speed and vibration reduction**: By eliminating sharp corners and using generous radii, you've enabled faster printing speeds and reduced printer vibrations. 5. **Improved print quality**: You've eliminated features that require overhang or bridging, making it easier to print the duct without issues. 6. **Easy installation**: The design allows for easy installation of the fan, requiring only one screw and pressure to secure it in place. 7. **DFAM enhancements**: You've optimized both the spacer and duct to reduce material usage, improve airflow, and enhance print quality. 8. **Print area reduction**: Note that using these ducts will result in a loss of about 1 inch/2-3cm of print area in the left corner due to interference with the motor. 9. **Important warning**: Avoid overtightening the bolts connecting the duct to the hotend heatsink, as it may strip the screws. 10. **Additional notes**: You've included a shorter standoff for the fan and have warned against using this design if you have any components attached to your steppers.