blade latch tool
A handy person from Stanton; Delaware says:
August 12, 2009
is there a tool needed to make the cut-out for the 70-174 when fabricating new screens?
Dave from SWISCO responded:
August 13, 2009
Yes there is a tool that we use when manufacturing screens to lance slots for blade latches, However it would not be cost effective for a few screens. I believe the die can run up to a few hundred dollars and you would need a punch press to attach the die to.
You could possibly use a dremel tool or a small drill.