7530 Blower to 30mm Fan (Tevo Tarantula, E3D, etc)

thingiverse

Tested solution proves itself as a game-changer for the problem of heat creep filament jamming on the standard dual extruder TEVO Tarantula, which comes with an underpowered 30x30x10mm cold end fan. Many radial 5015 fan adapter ducts exist, and I've tried upgrading to one of them - but it's still not enough, as the cold end heats up over 100 degrees when both heads are only at 190 degrees. The 5015 works perfectly for printing with one extruder at a time, but the whole point of buying a dual extrusion machine is to print with both heads! This massive radial blower makes it possible to print with both heads above 200 degrees, FINALLY! I've been printing every print with both heads ON since installing this part and haven't had one jam, whereas before it was a sure thing, given enough time. For installation, you may also need a dummy 30x30x10mm fan (spacer) to get it to fit, especially if you're using a layer fan duct that attaches there. If it's not obvious, you'll need supports touching the build plate to avoid printing the arms in mid-air.. Sept. 8 - An STL with an extra strap is added, which should let the 7530 snap in with a clip-like effect, but I haven't tested it yet... A non-manifold error occurs when loaded into Repetier-Host, so it's fixed and exported back to upload... The dirty hack of a .scad file needs some fine tuning, for sure. Sept. 10 - The clip version is printed, and it clips the fan in to a position where neither of the screw holes are aligned. That might be okay for a screwless version because the clip was really strong, but did break when I removed the fan from it. I have adjusted the position of the clip and filled in the area so it shouldn't break when removed, also added a version without the arms for those who prefer a no screws snap-in-only type install. And... they fit!