I performed the closely guarded secret process of opening this box of blades for about twenty minutes. Not a single dot of ink to cloud the mystery or shed light on it. I'm calling my good buddy Indiana Jones. Indiana Jones knows the incomprehensible ways of the ancient Egyptians and the not-so-old Nazis. Good reputation for this job. This can't be a joke as the top of the case looks broken and what looks like shrink wrap is actually taped on so the bits I removed make the case look like hell if I go ahead. But this must be a joke because the tool itself couldn't be easier to use. Completely intuitive. This must be a nod to German authority sensibilities (I know I'm 50% German) as opposed to the simplicity of the instrument. I've had no progress opening the case for at least an hour. . We hope this review is more helpful.