Hi Thomas,

Actually, main question is about fan. What model of fan holder to use and where to connect it?
Yesterday I've printed this one and going to install it:
20140811_081316.jpg
On the bottom of NEO I have found 2 available connectors for fans, but those are not controlled from the application. They're always powered on.
Maybe you know whether inside the NEO there is a connector?

And here are photos just to share experience:

1. Twisted corners when printing without fan:
20140811_081242.jpg
... it causes the nozzle to become dirty and sometimes broun bulbs of burned filament appear:
20140811_080247.jpg
... here is my "test" setup:
20140810_123817.jpg
no filament wrapping!

I was able to print this:
20140810_195220.jpg

Thanks!

Best regards,
Eugene