E3D v6 dual 25mm cooling fan holder

thingiverse

25mm fans work great on the sides to cool the part. I attached them using glue instead of screws (I didn't have the right size screw and wanted to print now). Using an E3D silicon sleeve for your heating block is also a good idea, as air flows against the side of it potentially limiting maximum maintainable temperature when cooling the part. The original evgs design was good but I found that E3D fins had almost a 1mm gap between plastic and edge of the fins allowing air to slip out without cooling the hotend. I combined the original E3D v6 fan holder design with evgs' clever design to make a better fitting fan mount. Another advantage is that the 40mm fan is now closer to the hotend fins making it less likely for your fan to stick out from under your effector platform. Be careful when printing with PLA as it's a little brittle. I recommend printing it in ABS or XT if you can, due to simple flexibility reasons. The original 30mm fan screws are a bit too long, so I had to put 4 or 5 washers on the outside to get the fan to mount flush without breaking the bottom of the hole... The 25mm fans mount with 12mm M3 screws (if your fans are 8 or 10mm thick at least). Cooling is much more effective on the hotend now and I had to readjust my PIDs with the new fan mount. [EDIT 24/01/2017] I removed previous versions of the part as it could lead to confusion. I also uploaded an image showing the part mounted with the original E3D 30mm fan and 2x25mm cooling fans on the side under my Kossel Mini effector. Printer Settings Printer Brand: RepRap Printer: RepRap Kossel Rafts: No Supports: No Resolution: 0.2mm Infill: 100% Notes: Recommend printing in a higher-temp plastic like Edge/XT/PETG, ABS or Nylon if you can, as it does sit close to the hot part of the hotend. Depending on what material you normally print the lower cooling fins can get pretty warm.