Summary

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/55p6XQG9423

This is the lid / cap / hanger for a Stevenson screen. I have uploaded a ring "thing" as well. Print as many of those as you like and add this to the top.

The pieces need to be glued together.

It is small - but I only have a Printrbot SImple.