Climber7 Part Cooling Fan

thingiverse

I modified my Climber7 part cooling fan using "Plasticene" and noticed an improvement using PETG, so I'd thought I'd set about making a STL model to refine the idea. There are some volume constraints with this part within the hot end enclosure, so I designed this as a one piece part with no supports in mind, just like the OEM did, which is why I didn't extend the air ducts. I have included a simpler STL aka "blank" which has no internal sculpting, and just two rectangular air slots, as well as a corresponding STEP file so it'll be easier to remix if anyone wants. :) In tests it looks like there is some mileage in an L shaped slot, as the air swirls quite nicely, and bridging and top surfaces are seemingly improved in back to back tests. I've also added a "sculpted" STL model that has converging air ducts aimed either side of the nozzle, which I haven't tried yet, but it might allow lower fan speeds. Not a lot happens before 25% with the OEM set up. It would take some CFD to conclusively test these, which I might do one day. PS & Update. I had to drop my cooling speeds in SuperSlicer to a default fan speed of 33%, bridges at 67%, otherwise as v8 was cooling the heat bridge too much and causing blockages. In the end I reworked the part again, and made a more inclined angle, that converged under the nozzle. This produced the best print results to date, so the "xxx-inclined-slot.stl" is my preferred part.