This earring comes in two versions, one with fixed rings and one with mobile rings. For the mobile rings, I used the idea of Penolopy from instructables: https://www.instructables.com/How-to-3D-Print-on-String/ We used pause at height but I then set a LAYER which is approx half the thickness. Add the cotton thread along the x axis and then continue the print. You need to ensue the print head moves to one of the rear corners of the print area. Remember to set a standby temperature! I also added a spot of super glue to the thread to make sure it stayed in place. You can also add a decoration in the middle to make it look more elegant! My wife prefers these printed earrings because they are very light and don't pull on the ears.