Printrbot E3D Dual Cooling Fan

UPDATE: I have designed a new Rear fan shroud which will hold temperatures stable at temperatures over 250C with kapton tape as an insulator; otherwise, It can hold about 205-210C without tape. If you are only printing PLA then you do not need to insulate your heater block. If you plan on printing PETG, ABS, or any other material that prints over 200C, you will have to wrap your heater block in Kapton tape.

Upload for this updated file will be later this evening. Look for the Rear_Fan_shroud