Stealthburner printing information

[boromyr]

Hello, I need to print the air duct of the StealthBurner, I read some comments saying not to use supports, but in the preview, I have many internal overhangs that will definitely drip during printing. Does anyone have any suggestions for this print? I was thinking of using tree supports only in the critical areas and removing them during the print, adding a couple of pauses during the printing.

 

[shiftingtech]

the comments are correct. Stealthburner does have some tricky bridging, but it *does not* require supports.

I'm not really sure where your screenshot is from. Its zoomed in a little too close for me to figure out, so no *specific* advice, other than making sure you're using the recommended slicer settings, such as a line width 0.4mm. you may also want to use a "classic" perimeter generator. Arachne sometimes does odd things.

 

[boromyr]

Here is another preview with a larger view.

My concern is that the overhangs without supports, exacerbated by the curves, create a path with greater resistance to airflow.

 

[shiftingtech]

you know what else makes a rough surface? Supports...

I'm sure you're right, the printed surface must create *some* turbulance, but I'm not aware of anybody having shown it to have a significant real world impact.

Ultimately, I think you're going to spend a lot of time fighting to print it the way you want, and not come out with much to show for it. Personally, I would move to one of the many alternative toolheads that mount the fans closer to the bottom before I went down a rabbit hole of trying to use supoorts inside SB ducts.

 

[boromyr]

My goal is primarily to achieve a good print without having to try multiple times or having to clean all the various tunnels, so I was looking for a comparison before printing it.

I believe I have found a better solution, using ArcOverang to minimize the risks of dripping, first printing the arches instead of the bridges, and then the walls, in this way there should be no drips inside.

 

[NoGuru]

Well thousands of Steathburner have been printed with no supports. Why not give it a try and see how it looks?