The spirals on the inside of the tube need to be deleted leaving just the spirals on the outside intact.
The tube is a group and the spiral ‘bracelet’ is a component. I select the spiral and ‘intersect with model’ so in theory I should be able to select only the elements of the spiral on the inside of the tube and delete them. But when I select those unwanted inside elements, surfaces of the spiral on the outside of the tube which are connected with selected surfaces on the inside the spiral also are selected. If I delete them this happens:
Please help me kill the unwanted guests!