Two weeks of stage one grit and they seem unchanged, and that's because they are. Somehow, all the grit sank to the bottom of the barrel and created a cement-like layer of fine ceramic media and grit that never got incorporated into the mix. I've never had that problem before. When I get the obsidian rolling again, I will be giving the barrel a really good shake before I put it on the rollers. Hopefully that solves the issue.
#rocktumbling #rocks #rockpolishing