Heart matryoshka

Introduction:Over a year ago, I designed a similar item for my girlfriend, and inside I placed a finger rosary. For a moment she looked surprised, because she thought I was proposing (and we hadn’t been together for very long), but then she saw it was just a rosary. Recently, I decided to improve the design and make it available to a wider audience. You can use it to give your partner a ring or something else entirely — it can even be a way to propose. There are many possibilities. So far, I’ve designed five hearts. The opening mechanism is similar to that of matryoshka dolls (even though they aren’t a symbol of my country, I did hold one in my hands as a child, and I was always fascinated by how they were made). I’m also attaching the Fusion 360 files I used to design them. The parts fit together quite tightly so they don’t fall apart, which means some printers may require adjustments to the model. If anything is unclear, I’m happy to help in the comments.I’m sending the fifth heart (