I modelled this after a wire puzzle that I already had.
The goal is to remove the rod.
I was inspired to create this puzzle after seeing Seabird HH's Spiral Puzzle. Seabird had the idea to print the ring with a small gap, attach it, and then super glue it together.
I used the same method. One ring has a small gap, and the other ring does not. Put the whole ring on the A, and then lock it in place with the ring with a gap, a drop of superglue will keep it together.
This puzzle is slightly more difficult than Seabird HH's.
The author marked this model as their own original creation.