Cutting Blade..................?A?NSA?, the only thing I can come up with is bandsaw but that means one of my clues down is wrong - Naps - this is the answer for 'sleeps'
I'm presuming that sueal is looking for an alternative to N in the fourth position of the cutting blade clue OR a word for cutting blade that fits ?A?NSA?
So DOZE and BANDSAW would fit ( but DOZE is not plural )or perhaps my suggestion of HACKSAW and KIPS