This pencil, or anything else cup can be printed in vase mode or spiralize outer contour in cura, or printed in normal mode. You can uncheck spiralize... outer contour to print in normal mode, set top layers to 0, set infill to 0%. Bottom layers set to 3 or more. Set walls to 1 or 2 or more for a more sturdy vase if not in vase mode. Can be scaled to fit your needs. The vase in the photo shows vase not scaled at 100% of the stl file at 58mm wide for X and Y and Z is 112mm tall. It has not been tested for being watertight and probably isn't printed in vase mode. If you make it, please post a photo, I'd like to see your print!