@Florian_Horsch_flouS Yes, could try higher diameter. Ideally there would not be multiple objects, just one. I’d like to be able to print the horse-ears on this chesspiece http://thingiverse-production.s3.amazonaws.com/renders/bb/a1/e5/70/e5/Horse_preview_featured.jpg without having to repair with putty afterwards 
And of course print proper antennae on http://www.thingiverse.com/thing:11426 (we all need those!)
No Joris, since I thought that would only be an advantage for ‘continuous print’ of one single object, not on three. Retraction seems to be okay, not fake. When I put my hand on the filament near the feeder, I clearly feel it pulling down and up.
Any tips for a good thingiverse duct fan for small objects? (I really like small prints http://www.thingiverse.com/JanPieter/made) 
You’re right with Joris 
My mistake!
I have the original fan duct, but I’m sure there are better ones especially for small prints. Just go by “Like” numbers or try some different ones (and let me know ;)).
One last tip which could really help: Try the “hop” feature in the very latest Cura (12.12) --> expert settings. It could help to not brake fragile details by hopping when travelling.
@Florian_Horsch_flouS It seems many fanducts need to be printed with ABS (I only have and tried PLA thusfar) because of the heat. I’ll take another look on thingiverse.
Yes, I saw ‘hop’ in the newest Cura, looks like a great feature! But unfortunately the option to manually place prints on the bed seems to be removed in this new Cura version. Prints are automatically placed in the middle of the bed now. Always on the same piece of blue tape… So I reinstalled the older Cura again. Manual model placement is more important for me than hop.
Hm… I think you’re right with the auto-placement. Hope it comes back.
Hop is not perfect, but can help with fragile structures.
Regarding the fan ducts: Just try PLA… from my experience it works. Well, some designs are really close to the heating block… some aluminium foil or something similar could help to isolate it from extensive heat.
Printing ABS on a non-heated bed is a pain in the ar$e, but there are also tricks for it: You could try to print on a spare piece of wood (let me know if that works please!), or try to glue it down with this DIY printbed glue (just google it, you make it from ABS and acetone).
This happened to me when my steps per unit was way to low