two grindstones. oval and rectangular double layer sharpening stone. whetstone sharpener on wooden table background

abrasive acuminate background bevel blade brick brown carborundum closeup cut domestic double edge emery equipment finegrained gray grind grinder grindstone grindstones handle hone instrument kitchenware layer new object oval polish rectangular rough sharpen sharpener sharpening stone straight surface table tool two utensils whet whetstone white wooden