DaVinci 1.0 Tilted 50mm Fan Clip-On Curved Front Duct with Support

thingiverse

After using my previous duct (http://www.thingiverse.com/thing:785491), I experienced significant improvement in my PLA prints. However, I was still not satisfied because I noticed occasional spots that could have been avoided with increased airflow. Also, when I placed my hand over the back of the fan, I felt air coming out, prompting me to change the design to maximize airflow to the extruder. I adjusted the fan to direct it more towards the correct direction by tilting it. Then, I curved the duct to better facilitate air direction. As a result, I'm thrilled with the significantly improved outcome compared to my previous duct. This one is designed with supports in place, allowing you to simply slice and print. Instructions I printed mine at 0.3mm layer thickness and 10% infill using ABS without any support required. Once it's done, just break off the supports. For the fan compartment, a sharp blade can make removal easier due to its tight fit. After experiencing such great results with PLA printing, I decided to print another PLA version of this duct. To my surprise, it came out even better than the ABS model. Since someone asked about my fan setup earlier, I've included that information in these instructions now. Regarding fans, you should know that I have a 12v 50mm fan installed. Inside your printer, you can access either the 5v or the 12v connector to tap into the correct voltage without issues. To ensure safe connection, be cautious of any wires rubbing against printer components during movements. When testing electronic boards, micro grabber clips are an excellent choice for safely attaching your wires to these connectors. Simply connect them securely, ensuring reliable power flow. I have also incorporated a relay module powered by OctoPrint to automatically control my fan's operation. By default, the fan turns on when starting a print and off once the job is complete or cancelled, working perfectly for me since I primarily print with PLA materials. For an added benefit, you can easily connect a relay module to control your venting fan. For this, simply utilize a single relay powered by 5v, which should trigger when the LED light indicates a printer state change. To do this safely and correctly, locate three brown wires on your main board's harness at its top – each giving clear signals. The correct signal for the task can be derived using this knowledge to automatically turn off your venting fan during sleep mode.