I have Metabo HC260 planer/thicknesser (or jointer/planer if you must) and I bought a new set of blades for it. The original blades have a little notch on the back side where an adjustment screw sits (it has a flange). The blades I bought on the other hand don't have that notch. Now I'm wondering if it is still safe to install those blades?
I'm fully aware of how setting them up became infinitely more complex, but I was just wondering if that little notch plays a part in safely keeping that blade in place? (The last thing I want is a blade flying around thrown at 6500 rpm).
The blades I bought have exactly the same dimensions as the original ones.
If it's still unclear what I'm talking about then this is shown in this video: https://www.youtube.com/watch?v=1uXh1fx6JE0 (from 3:00).