Tagged “durability”
-
Testing a stone at home
The scratch test, the water test, the loupe and the kitchen scale — what each one actually establishes, and the much longer list of what none of them can.
-
Hardness, toughness, and why tools break
Hardness resists scratching. Toughness resists fracturing. They're different properties, and the harder stone is often the one that snaps.