I have built several iterations of this vise over the past decade or so for holding small parts and irregular shapes. A while back I needed an in between sized vise and didn't have one. So, I made the parts, got busy and set them aside. After almost 2 years I decided it might be time to put it together finally.
This is a combination of a Leg vise, jewelers vise and what Benchcrafted is calling a Hi Vise.
Unlike most vises, I made the fits rather loose so that it can accommodate irregular and angled shapes easily.