If you need to paint or finish a part, paint cones are a must. They hold your part above the surface. They allow you to hold a wet part without marking it. They can hold spherical parts in place and stabilize complicated shaped ones.
These are serious paint cones. Unlike cheap printable or commercial ones, those have all you want :
The V2 version addresses some of the reported challenges while introducing new improvements:
These paint cones are part of the Serious Bench Biscuit System :
https://www.printables.com/model/272095-serious-bench-biscuit-open-source-bench-dog-system
Directions:
The author marked this model as their own original creation.