E3D v5 30mm Fan Duct

thingiverse

HJK14's fan duct almost works perfectly for my printer (T-MAX 2.0, a Mendel Max 1.5i derivative), but the screws holding the pillow blocks were slightly too long and pushed it down, so it doesn't sit perfectly. I added an extra indentation to the top of that design so it clears the pillow blocks with ease. The pictures show the original 30mm fan that came with my E3D mounted securely to the duct, and combined, they provide ample cooling power to run even higher-temperature materials (e.g., 250+ degrees) without heat issues inside the tube. The photos were taken while a job was in progress, so they're not flawless. Update: January 12, 2016. I was learning a new 3D CAD program and wasn't completely satisfied with the airflow through the heat sink, so I thought this project would be a great opportunity to learn and experiment. I redesigned it entirely from scratch based loosely on the original design, as there seemed to be reasonable backpressure due to the restriction of the conical duct's design. This new version fits just as snugly as before but features a more open cylindrical duct of the same size as the fan opening instead of the original conical one. When mounting it, the rib clicks neatly into place between the first and second fin on the heatsink. Instructions Orient the part in your slicer with the fan mount facing down and you should encounter no printing issues. In this orientation, unfortunately, I experienced some inter-layer cracking problems with ABS around the area that attaches to the duct since it's designed to snap onto the E3D v5, near where it connects. To fortify that spot up, I applied a small coat of Testors model cement on both sides and let it sit for 24 hours until it was fully cured. Painting with acetone or even vapor smoothing would likely work just as well. My printer printed in clear ABS with settings of 0.2mm layers, 0.8mm thick walls, 0.8mm top/bottom, using a standard nozzle size of 0.4mm.