Here is a lovely simple cauldron designed specifically to print in vase mode! Use it for autumn bouquets or halloween candy… or lots and lots of math rocks! 

My examples were printed with a 0.6mm nozzle with a 1.0mm line width using “Spiralize Outer Contour” in Cura 5 in Real Black (3d Solutech), Twinkle Black (Enotepad), and Galaxy Sparkly Black (Eryone) at various sizes. 

You should be able to print this with a 0.4mm nozzle, though I recommend setting the line width to 0.8mm and increase your temp by 5-10 degrees to accommodate the increased flow.

Try it with fuzzy skin turned on!