oh I see...... my idea of a sandwich is basically a stack of flat laminates...
as for the center .... its to your advantage to add a layer inbetween when you fold steel... it makes up for the steel lost due to forge scale... (therefore keeping your billet from shrinking in size)
as for a pinced edge..... if this is the similar technique used to weld the steeled bit into an axehead....I can see lots of problems happening if you were to do this with a thin edge.... hot cutting the slot or groove for the steel bit/edge to fit in would be hard to do... (theres not enough metal)
but if you were to add the steel after the billet is squared and then pointed at one end..... you'd end up with a thick edge look .....its very similar to viking twist core swords........ cept this has no twists..... and the core laminates are sideways to show long lines....
heres a little knife I just made..... cept its got twists and folded...... and no outer edge......but it has the lines
http://gal.bladesmith.org/view_album...e=greg_t_obach
Greg