Soap Edge Cleaning: A Simple Method for Efficient Surface Debridement

while cleaning a bath-tub, I accidentally discovered that using the edge of a dry soap bar before adding water removes grease more effectively than conventional wet-first methods. This paper documents the observation, the physical principles involved, and a practical framework (Kinetic-Aqueous Cleaning Framework — KACF) for replicable results. Key findings: Soap edge applies 40-60× more pressure than flat face Surface turns uniformly white when ready for rinse Optimal water volume: 30 mL per 100 cm² Tap test frequency distinguishes clean (800+ Hz) from dirty (90° (dirty) to