Prusa i3 MK3 Part Cooling Fan Duct Remix

prusaprinters

<p>Simple remix from KevinTheGoalie's remix of RoboGenius's fabulous MK2/2S blower fan duct. All I did was add a "rib" down the center of each air channel to provide support for the top layers as they print. My attempts to print KevinTheGoalie's version in ASA and PETG would droop quite a bit &amp; wound up with a lot of filament loops inside the part that I couldn't easily remove. Probably wouldn't have hurt anything to use one of those, but I decided to make this mod &amp; print it. Worked fairly well. No drooping on the top layers. Mission accomplished.</p> <p>Common wisdom suggests using ABS/ASA, or at the very least, PETG for this part. I made the RoboGenius duct from Makergeeks' Raptor HTPLA, annealed it in the oven &amp; it lasted over 6+ months of heavy use before I sold my MK2S. Am I guaranteeing you will have the same luck? Heck, no. But if you have an HTPLA around, and no PETG/ABS/ASA/PC/Nylon, you could give it a go. At your own risk. :-)</p> <p>This time, I went with ASA, because ASA is cool. Cooler than fezzes, even.</p> <p>EDIT: I was not 100% satisfied with the fitment of this part in its original state. I made a few minor adjustments &amp; found a much easier fitment. Adding that file as an option. (Differences: moved the mounting hole up 1mm &amp; shaved 1-2mm off the rib in the middle of the area where the fan duct connects to the fan.)</p> <p>NOTE: I use a non-standard nozzle that is a tiny bit taller than the standard e3dv6. If you find the "easy fit" duct sits too low on a standard e3dv6, please let me know and I will try to make a few more adjustments. It sits several mm above my tungsten nozzle, so I<em>think</em> it should be OK with the stock nozzles.</p> Category: 3D Printer Parts