Hydra Fan Duct Heat Creeper

thingiverse

<h1>General Information</h1> <p>If you're using BoothyBoothy's great "Hydra Fan Duct" but suffer from heat creep when printing at really low layer heights, for example, then look no further! The "Heat Creeper" is here to solve that problem and it won't blow you up, guaranteed!</p> <p>I am using it on my all-metal conversion of the Ender 3's hotend and did not experience any additional heat creep issues after installing this. However, If you're still using a PTFE guided hotend like a standard Creality one, then this part will probably not be needed as cooling performance should be sufficient without it.</p> <p>This part only works with the self-tapping version of the Hydra tool changer and will not fit the frame with threaded inserts.</p> <h1>Further Details</h1> <p>This part is designed to better channel the hotend cooling fan's air without introducing too much back pressure or resistance.</p> <p>The cross-section is divided into four sub-sections to reduce the turbulence produced by axial fans, improving airflow over the hotend's heat sink. The horizontal beam curves downwards to guide the air at an angle over the heat sink, further improving cooling performance. Additionally, the hotend is slightly embraced, so almost no air can move past its sides. All of this is achieved while still maintaining smooth surfaces, shallow angles and minimizing the part's thickness.</p> <p>If you have ideas for improvements, feel free to contact me!</p> <h1>Printing</h1> <p>I printed it in HT-PLA because it is close to the heat block. However, it is directly cooled by the hotend fan all the time, so PLA should actually be fine but I haven't tested it.</p> <p>No supports are required and it's generally an easy print.</p> <h1>Updates</h1> <p>If any changes have been made after the first release, you will find them here:</p> 10.02.20 Initial release 12.02.20 A variant without beams was uploaded for easier printing with stringy filaments like PETG (Thanks to BoothyBoothy for mentioning it!) 07.03.20 Hole sizes were increased from 3.3mm to 3.5mm and some unnecessary material on the backside was removed, making mounting a bit easier. The parts are referred to as V2 16.04.20 A missing fillet on "Heat_Creeper_V2_withoutBeams" was fixed