A single column charged particle source with user selectable configurations operates in ion-mode for FIB operations or electron mode for SEM operations. A method is disclosed for manufacturing a High Temperature Fuel Cell, and the associated components, having a solid oxide electrolyte, and designed to transform chemical energy directly into electrical power. From its originally closed position with the follower positioned at the apex, the vent can be opened either forward or backward by selectively moving a handle that actuates the follower along the curved paths defined by the convex sides.