Reply To: Diamond Stones – not cutting well. Need cleaning?? Welcome! / Forums / General Woodworking Discussions / Tools and Tool Maintenance/Restoration / Diamond Stones – not cutting well. Need cleaning?? / Reply To: Diamond Stones – not cutting well. Need cleaning?? Ed 14 December 2017 at 8:17 pm #403734 The best I’ve found for cleaning is scouring powder applied with a green 3M pad using glass cleaner as the fluid, then rinse with water. Take care with mixing ammonia and bleach (depending upon the scouring powder and glass cleaner). Settings