Set sample/indenter hardness and load, then Run pass — a harder indenter cuts a real groove, a softer one just burnishes.
💎 Mineral Hardness Scratch Test (2D)
A flat 2D version of the same Mohs scratch-test formula as the 3D lab: choose the sample and indenter hardness plus the applied force, run a pass, and watch whether a real groove cuts in or the tool only burnishes the surface.