This nice little adapter ring should fit into the opening of various thermal carafes. It makes it easier to use larger pour-over style coffee cones. In particular, this older 6-cup Melitta cone. The adapter never touches your coffee, so food safety is a bit less of an issue.
Print settings:
NOTE the second picture shows how poorly the cone fits into this carafe WITHOUT an adapter.
The author marked this model as their own original creation.