I tried other cooling shrouds and decided to create my own. from what I have read about cooling freshly printed filament and from some previous knowledge on air cooling dynamics, I created this cooling shroud that blows are in a consistent solid stream across the nozzle about the width of the hot end. By keeping the air flow constantly moving passed there is no stagnate air hanging around so in theory the heat is transferred from the filament more efficiently.
Other shrouds I have tried blow from multiple directions which too me create turbulent air around the nozzle causing it to stagnate and in turn holding the warmer temperature air around longer.
**V2: This version improves on the my first design by directing the air stream directly onto the nozzle, whereas the first version directed it more onto the heating block and was not as efficient.
**V4.1: Now new and improved with the 45 degree fan update, bonus added extra support! no longer a wasted support sticking out to the side. Improved air stream now more towards the print away from heater block. The previous version I have been told and experienced some thermal runaway because the air hit the heater block, this has been solved. Less wasted air and now more focused on the extruded filament.
**V4.2: Added a requested armless version
0.2mm Layer Height, 5 top & bottom layers, 3 perimeter. this are the settings I used
N/A there is no area large enough to infill
ABS/PETG or another High Temp resistant filament required!!!