This is the height and angle regulated system for nozzle cooler for i3 Prusa clones with MK8 extruder.
You can change the height of the fan (and lock it) - so there is no problem when you change nozzle for any different model, or when you use different cooling conduct.
You can change fan angle, so it's output is perfectly parallel with the bed (mine has a bit skew mounting holes).
Additionally, you can use my cooling conduit - but you could probably find plenty more, here @ thingiverse.
Screws and Nuts :)
I have used computer screws (used widely when mounting any motherboard) to mount first plate to extruder carriage. But you can use any M3 screw that is short enough (probably 7mm or less).
You will also need an M3 nut for side locking mechanism (just push it in with vice or pliers), and corresponding screw. I used my old screws to attach fan - just needed to add 2 more M3 nuts.
- I've added version with additional 0,25mm space between rails and lock (if standard version is to snug fit for your printer)
- This is my third design of this system, but first release - so let's call it V3 :)
Infitary (hbi3) i3 Priusa clone
Print is quite easy, but there is a bridging. In my case this does not required supports, but it probably heavily depends on the printer settings.
You should set infill at 35% and more (so rails will stick hard enough to surface).
I used mostly PLA, but for nozzle cooling conduit ABS is recommended.
After printing there may be a need to easy edges of rails a bit. Just use a file or sandpaper - you should have not much work with it, if any.