A sharpening stone is used to sharpen knives. To use it effectively, the knife is held at a consistent angle against the stone and moved in a circular motion to remove dull edges and create a sharp blade.
A whetstone is a tool used for sharpening blades, such as knives or axes. In "Moby Dick," whetstones are mentioned in the context of the sailors sharpening their harpoon blades in preparation for hunting whales.
The noun hone is a singular, common, concrete noun; a word for a fine grained whetstone used for sharpening a cutting tool; a tool with an abrasive rotating tip used enlarge holes to exact dimensions in manufacturing. Example: This was my father's hone that he used to sharpen all our knives and tools.
A tool that is used to sharpen the end of a pencil to make writing with it easier.
If you're asking what volcanic rock can be sharpened as a cutting tool, the answer is obsidian.
Commercial knife sharpeners sharpen your knives that are not serrated. That is pretty much the only function or benefit it has to offer. Just be careful if used improperly you can ruin the knives.
I have used the Work Sharp Knife and Tool Sharpener for all kinds of knives.
Here are a few sentences using the word "sharpen": "Before carving the vegetables, make sure to sharpen the chef's knife for precise cuts." "The carpenter needed to sharpen his chisels before starting the intricate woodwork." "To improve your drawing skills, regularly sharpen your pencils for finer lines." "As a chef, it's essential to know how to sharpen kitchen knives to maintain their cutting performance." "She decided to sharpen her skills in public speaking by attending workshops and practice sessions." "The old saw had become dull over time, so the lumberjack took some time to sharpen its teeth." "A good way to enhance your writing is to constantly sharpen your vocabulary through reading and learning new words." "Before heading out for the hike, remember to sharpen the edges of your camping knife for various tasks." "The artist used a specialized tool to sharpen the tips of his charcoal pencils for detailed sketches." "The experienced angler knew the importance of regularly sharpening the hooks on his fishing lures."
To sharpen chisels effectively, a bevel angle of around 25-30 degrees is recommended. This angle helps to maintain the sharpness of the chisel edge for longer periods of time.
Steel
Steels are commonly used, but I have a set of different carborundum stones on handles which are much more efficient.
A water stone is the same as a whetstone. The water stone is used to sharpen knives. There are retailers online in business specifically catering to people who need water stones for cooking knives, and woodworking tools.
A tool and cutter grinder is used to sharpen tool bits, milling cutters, along with a bunch of different cutting tools. It is a versatile machine that can perform a wide variety of grinding operations.