trying to boolean difference the middle out for where the ringer will go but i dont know how to cap and make the ring shank planar daniels ring_15.5mm42 (1).3dm (942.9 KB)
hi @johnny_wang your base surface is far from perfect. You can get there by using _Trim (to trim the cylinder on the ring and vice versa) but that will not solve all. The ring surface itself has naked edges and even self overlapping parts:
