Here is a tip for securing ring and bezel mandrels, set them up in a vise! Having them secure allows you to work faster and more efficiently! It also frees up your hands —super helpful for stone setting and shaping. I love my rotating @grstools vise however this would work with any vise! Depending on your vise and mandrel, wrap in leather to protect the mandrel from the vise grips. Have you tried this? 🔧💎