Ultimaker Cooling Fan
This is my solution to the garbage stock cooling fan that the Ultimaker comes with. I went through a lot of testing and came up with this dual fan setup that uses smaller fans to keep weight and size down to a minimum. I have the files for the stock sized fan if that is all you have, but if you want the best experience you need to get the smaller fans and use the 24mm shrouds.
YouTube Video:
http://youtu.be/t6CScaGw4Ak
Link to mini fans:
http://www.ebay.com/itm/251483200834?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649