The stake set in the vise is a creasing or folding stake and is normally used for folding over a right angle on a sheet of metal.  I'm going to be using it for a different purpose though because it has a straight edge that is very thin and knife like. The bulging section that's resting on top is going to need some sharp definition at its junction I decided, so I'll work over the edge of the creasing stake to achieve this.  I'll be able to roll the shape over the stake while hammering from the other side.