Mohs Scale to Dremel Bits: What to Buy First

Ever wondered what actually happens when a rotary bit hits a surface? This episode covers the physics of engraving — the Mohs hardness scale, the hardest known materials (diamond, wurtzite boron nitride, tungsten carbide), and why hardness differential matters more than absolute hardness. Plus: a practical starter kit for Dremel bits across wood, metal, glass, and stone, so you stop guessing and start carving with confidence.