Printed this out on a FLSUN QQ-S Pro using rainbow PLA. Printed perfectly using only a skirt, and zero supports. I did have to scale it up due to Cura being, well Cura. I just went with the length recommended, and it seemed to work fine. Glued together with Gorilla Super Glue, and it sounds amazing. I'll have to experiment more as I've never played an ocarina before, but I can easily see this having a spot in my ukulele covers!
Noulei Silk PLA