Thanks for your response!
I could be mistaken about the timing issue, perhaps the layers were completing inside-to-outside wall paths that merely seemed to be starting new layers too early. Where is the minimum feedrate setting? I'm looking for it and cannot seem to locate it.
I agree this is a rather tough print, but I felt I should try the more difficult prints to give a sort of torture test for my machine. I've seen people print those super high resolution Yoda Heads with great success, and a lot of those surfaces are similar in slope and layering to what I was trying to print with this fan.
I have installed the printed fan after cleaning it up, and honestly, it rests perfectly around the print head without touching it, and with the fan blowing cool air through it, I did not notice any drooping down onto my part. It was also a concern of mine, but I thought it did quite well. Maybe I'm too inexperienced to make that call though.
I am really interested in what you said about airflow though. I had not thought about the fan's power, and reducing the nozzle size. It seemed to cool my other parts just great, but again, I probably don't have the best feel for this kind of thing yet. Still, the fan guide NEEDED to be replaced. The stock one was giving me too many problems. Is there another fan cover you might recommend?
Again, thanks for your response gr5! I truly appreciate the feedback
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gr5 2,224
What? Did you time it? This feature works quite well. Make sure you set the minimum feedrate to 0 as this setting can override the min layer time.
This is a difficult print because of the steep overhang and the cooling shrinking effect on steep edges that warp upwards. Not sure what to do about it other than adding some support. A heated chamber might help.
Anyway I recommend you do not make this at all. For one thing, it is bound to get too close to the nozzle and melt/droop onto your print. For another, restricting the air flow this much is not a good idea as the fan isn't designed for this small a nozzle and won't create much pressure and you will basically just drastically reduce the cooling.
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