Helical barrel - gift/treasury box, mini vase or tree decoration
Comments
@adr_insc_2417855 Cool! If I ever have an opportunity/need to print another one at that scale, I will be sure to report back and let you know how it goes!
@SnarkDADmin_1828737, just wanted to let you know that due to your feedback I've done some minor modifications to the base/handle part to be more overhangs friendly.
@adr_insc_2417855 I turned the blue part up to "Sport" speed on the printer itself (which is approx 125% of what's in the sliced code) and I think that and other un-optimal settings (print order, some other speed settings, etc.) caused that part to have such bad overhangs at the handle dome bit. Plus I think the scaling is definitely a factor. That part is always going to be pointing towards the table though, so I'm not all that fussed about it. Unfortunately, bambu printers apparently are known to struggle with overhangs a bit.
I ran the white piece at normal speed and dramatically turned down my overhang speed. Changed my wall order from Inner/Outer/Inner to Inner/Outer (may not have mattered with only printing 2 walls,) set it to print infill first, and possibly a couple other settings. I should have turned my bridging speed down too but it came out way, way better than the blue part.
The final settings (Orca Slicer) for the white piece, which came out much better, were:
Quality Tab --
Wall order: Inner/Outer
Thick internal bridges
Detect overhang walls
Reverse on even (i think the name changed from reverse on odd in the current beta)
Reverse only internal perimiters
Strength Tab--
2 Walls
Detect Thin walls
Sparse infill: 15%
Infill pattern: Adaptive Cubic
Speed Tab --
Outer Wall: 200mm/s
Inner Wall: 300mm/s
Small Perimiters: 50%
Sparse Infill: 270mm/s
Internal Solid Infill: 250mm/s
Top Surface: 200mm/s
Gap Infill 250mm/s
Overhangs:
Slow down for overhangs
Overhang 10,25%: 40mm/s
all other overhang percentages: 10mm/s
Bridge: 50mm/s External, 150% internal (I likely need to slow this down more) (edited)
@SnarkDADmin_1828737, thanks for your feedback. That thing, in your photos, still looks great, I think. I never thought someone would scale it up that much. Now I wanna try it too :)
I had some overhangs issues with the previous iterations, but after decreasing the inclination angle and thickening the walls, they went away and everything came out quite cleanly, at the original scale.
Maybe the large scaling is the culprit here, but can't tell before trying it.
More on my settings:
Infill: 20% Cubic
Printing speed: 50 mm/s
Wall speed: 25 mm/s
Also, I've printed this in PETG, but I don't think that influences that much in this area.
If your printer struggles with overhangs at all (bambu owner here so I know this pain) you are going to want supports if you upscale (which I did significantly), even though the details tab says no supports. I'm not going to post the pic of my truly awful bridges on the "base" piece because I think that was almost all me, but even after very aggressively changing settings in the slicer to try to improve overhang performance, you can see in my photos that the top (white) part still struggled in some spots. Again, this could be either my scaling or my printer or both.
I scaled this thing up 300% and printed it in the colors of the school my wife teaches at. Other than the overhang issues I had, which again could be because of the scaling, slicing, or printer) it came out great and she loves it. I think she's going to use it to hold candy or trinkets or something for the kids if they're good, so it won't see much use because her class is rough af. (but at least it will look cool)
I don't have any fancy light boxes or anything to photograph it in, so enjoy these photos of it sitting on a 12-pack of cokes.