i broke some blades of my extruder fan with a hexnut wrench! - the awesome MBI support promised me to send one as soon as possible - in the meantime i designed a fan prothesis that can slide over the fan with the broken blades. i didn´t test it yet - but perhaps someone is more desperate than me!REPLICATOR 2 - 100% infill, high resolution - Printing time 15min. Get rid of the blades and slide the prothesis over the fan zylinder - smale pieces of the blades will help to fix it! (i guess) can´t test it because i will wait for the replacement fan - if it works - tell me! than i print some for the next accident like this! P.S. The great support from MBI send me a new Fan last week - thanks for that! - now i could test it - it should work!