"For Dry and Wet Use Sharpening Diamond Abrasives with Sintered Segments To optimize sharpening experience, try running your abrasives through the sharpening stone DRY. By design, the sharpening stone is intended to create additional friction and excess heat, to help with the sharpening process. If possible, please run your abrasives through the sharpening stone at slower speeds (On a variable speed grinder, try lowest settings.) This will create a grinding effect and will help you in achieving the best results.