Like what difference does the cutting motion do compared to just pushing down a knife ?
In: Physics
The short answer is; a sufficiently sharp knife does not need to be.
So either your knife is blunt or the material you are cutting is too solid for a knife to cut without becoming blunt as it cuts, so you use a serrated knife which has points, then you need to draw the knife back and forth as you slice as the little teeth will break the surface of whatever you’re cutting as you go.
Even if sawing is not necessary, it’s usually a good idea to cut with a sliding action to avoid cutting entirely on one plane of the blade which will ensure it becomes unevenly blunt.
Latest Answers