Is there a difference between a metal polish and a rock polish? I assumed 1 micron Aluminum Oxide was just that, now I'm second guessing myself. Has anyone used this company? I'm

Aluminum oxide vs. cerium oxide vs Diamond powder : r/RockTumbling

Pennsylvania Rockhounds, What is this rock

Metal AM Spring 2023 by Inovar Communications - Issuu

Fundamental Rockhound Products: Standard Tumble Polish for Rocks and Glass, Aluminum Oxide (1 lb) : Toys & Games

Alternative to Aluminum Oxide Powder for Fine Polishing

A New Receipt For Vibe Tumble - Rock Shed Pre Polish/Polish

Metal Faq, PDF, Metalworking

General : K2

Pennsylvania Rockhounds, What is this rock

I often hear that certain materials can only scratch another material if it is harder (such as the Mohs scale). Why does my fingernail scratch iron? I assumed it would be softer.