Shaping the Tool - Scissors are reshaped very rarely. That could be done when the scissors have a broken point off the end (or other significant damage). But then it does need to be considered if simply replacing them is a better choice.

Rotary cutters are also not reshaped. Frankly, the danger of cutting yourself is too high, so this is NOT recommended.

Sharpening the Tool - Scissors and Rotary Cutters should be resharpened as needed. And of course, the tool must be resharpened whenever your spouse gets them back from their cousin (who used them to cut cardboard).