My fan WAS a 9 blade fan so it was more easier to fix it, from the broken blade skip 2 two blades, break the next blade skip the next 2 blades and cut the next off and you should be left with a 3 blade fan looking fan but with 6 blades instead so you will be left with a 6 blade fan.utting off fan blades is done with cutting pliers or nose pliers, try to cut of the fan not pull it off, you can damage the rotor assembly by trying to pull the fan blades off. More about: fixing fans broken fan blades. flank21. August 23, 2012 8:34:01 AM. I used super glue to fix a fan before.