The knife is destroyed.
several years has been such, harsh environments, dishwasher tablets......
but , blade is perfect !!!
the knife edge can not drill through lack of means
Stainless steel seems
super hard drill is pending ...
may be considered as a workaround, fiberglass, vinyl fabric
because I could not drill through, I looked easier to machine materials
an unused sheet of polyvinyl lcd monitor rescued knife I cut off the handle
as a clear, visible parts of the operation of the knife