Use the supplied original fixed mandrel and single teal ring. Lock the camera and ochre mandrel. Move the ring slowly down around the taper. Let its opening expand progressively to pass around the widest collar while the band stays one closed loop with its coral front-left mark attached. Once the whole ring has cleared below that collar, let it narrow again around the thinner lower stem and stop. Keep front/back occlusion coherent: the rear arc stays behind the mandrel and the front arc remains in front. No slit, cut ends, duplicate ring, solid pass-through, mandrel shrink or entire-scene scaling. End with one recovered loop surrounding the original lower stem. This is a visual deformation request, not a material-strength test.