I'm having a hard time finding some documentation on the thickness of a knife edge. I need to calculate the force to slice an apple. I found the skin bursting strength to be 1.1 MPa. That means that assuming the thickness blade to be 10.0 micro-meters and the max length of contact with the blade and apple is about 10 cm, the force I get is 1.1 N. Does that sound about right. I would rather not assume, if someone knows of a source of knife edge specification. Thanks.