Anet A6 Adjustable Fan

thingiverse

UPDATE: I've fine-tuned the top duct to fit better and made it truly adjustable without needing post-processing adjustments. This tweak is based on feedback from several individuals. Be sure to check out my semi-circular fan, which offers an upgrade to this design. This remake of JohnnyTheOne's great work focuses on centering the ring on the printer's nozzle. I aimed to create a centered airflow as much as possible. There are two different versions available. Version one is best suited for printing with PLA and ensures that the fan remains far enough from the heating block to prevent melting. In the STL image, you'll notice the duct is positioned closer to the inner ring. The second version prioritizes centering the air flow without worrying about the heating block's temperature tolerance. It's ideal for ABS or PETG filaments. The STL image shows the duct farther away from the inner ring. Take a look at the pictures to see the differences between my two versions and Johnny's original design. I've also modified the top part of the fan with a slanted connection, which I prefer over the original design. When attaching the upper section, make sure the higher slant is facing away from the fan blades. The tight tolerance between the top and bottom parts requires careful handling when inserting the upper portion into the fan duct. It may take some effort to get it right, but be patient – it's almost impossible to separate the two sections once they're deeply connected. I achieved success by making incremental adjustments and testing the fit repeatedly on my printer. I'm pleased with the outcome, despite finding the process tedious in Sketchup. However, I couldn't replicate JohnnyTheOne's smooth edge work; perhaps more practice or a better tool is needed. To his credit, he created an excellent fan – I just aimed to improve upon it by centering the airflow. To ensure the fan is parallel to the bed, I added two washers on top of the 50mm fan. You can refer to the picture for details or use a 3D printed washer if necessary. Print Settings: * Printer: Anet A6 * Rafts: No * Supports: No * Resolution: .1 * Infill: 30% * Notes: Tight fit – sanding may be required after printing to achieve smooth movement. I used brute force, but printing a new fan might be necessary if adjustments are needed. * Recommendation: Use ABS or PETG for this part due to its proximity to the nozzle.