Fan cowling for Delta printer

thingiverse

After receiving my Kossel Clear from Blue Eagle Labs, I soon realized the need for a fan. So, I constructed one but mounted the hotend on top of the platform instead of under it as directed in the video. This resulted in the hotend not hanging down as far. Initially, I used a fan that was an inch thick and drew 0.55 amp; however, the RAMPS/Arduino could not handle it at full power for more than a couple of minutes before it would blink out and reboot, causing failed prints. The fan worked well at 80% but its high center of gravity caused the hotend to wobble during infill. Hence, I decided on using a smaller fan that drew only 0.09 amp, but it did not move enough air. To resolve this, I added two fans - one on each side - and considered adding a third in the original top location. I haven't printed the three-port version yet, but it seems doable. The design includes built-in support that breaks out easily. My slicer struggled to create sensible support, so I opted for built-in support. Additionally, I left the cone wall in the side fan ports intact as a potential option for future side fans. I also considered cutting slots and bending the plastic inward to create downward facing louvers, which would be easier than printing them. The thin wall made it easy to cut.