i know that the handles are not very stable, the smoothness of opening is not very good, and its very large. aside from that, this butterfly knife actually has a recognizable blade and handles that cover the blade (somewhat) when closed. plus, it even locks open.
and sorry for any blurriness.
Step 1: Blade
the broken 90* connector is not a design requirement, it was simply the piece i had available when i built this. a 45* could also be used in its place.