MendelMax 3?

[MiniMadRyan]

Yup, that's exactly it. It's not really needed if you are printing ABS, but for PLA, it's almost crucial. It aids a lot when printing sharp overhangs, small details, or unsupported areas, and without one, it makes a huge difference in quality.

Generally, the closer you can get it to the hot end tip, without affecting the heater block itself, the better. You'll see that even the new TAZ6 (Mangrove) has dual cooling fans for PLA

[BLZN57]

Yup, that's exactly it. It's not really needed if you are printing ABS, but for PLA, it's almost crucial. It aids a lot when printing sharp overhangs, small details, or unsupported areas, and without one, it makes a huge difference in quality.

Generally, the closer you can get it to the hot end tip, without affecting the heater block itself, the better. You'll see that even the new TAZ6 (Mangrove) has dual cooling fans for PLA

So after chatting on IRC that pic I added to my last post is wrong. It actually comes with two blower fans situated about the same as in the pic I added and you have to print out the fan mounts on your own.