UPDATE 11/9 2023: Changed the line width on the 0.4mm nozzle profiles from default to 0.6mm, this is my go-to when it comes to vases.
Also increased bottom layer from 3 to 5, some filaments the 3 layer can be little to low or if it gets stuck on the build plate this should fix any of these issues.
Comes in two different variants, the low poly seen on the print and a high poly. The main difference will be the inward curves will be smoother. Its an effect some like while others dislike so take your pick!
High poly ~200mm tall (It's a pretty large file)
Low poly ~201mm tall
Made in Photoshop and Blender.
Recommended to use with silk filament for best results.
Also my own personal pick would be a 0.4mm nozzle with 0.6mm line width.
FAQ
Will it hold water?
You can seal the bottom with wood glue, make sure it gets into the corners too and let it dry can take up to 48 hrs for the corners to get dry. (Get the right kind of glue, here in Sweden It's marked as outdoor that one is water resistant)
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