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This thing is bullcrap. Does not work as well as I wish it would. If you want better solution check out my single fan hotend/part cooler, performs way better and reliable.
Tronxy X1 40 mm part cooling blower fan shroud.
You screw it with 3 screws onto metal case around hotend so that screw will be going trough shroud, metal case and little cool end fan inside a case. That way you will have everything attached properly.
Belt tentioner for Y axys http://www.thingiverse.com/thing:2169655
Supports in cura touching bed only or manual supports. Setting up supports that are automating and all the way will effect with unusable piece of plastic because it will clog up duckt all the way up.
Print circular side flat and down.