you use a grind stone
You can select the part of the image you want to sharpen and click on the sharpen tool or you can just click on the sharpen tool and use the brush to sharpen certain areas. thegimpking.blogspot.com
you run the blade slowly over a whetstone.
sing,sail,try to find gold,sharpen swords
You would use a pencil sharpener to sharpen a pencil.
You should know the angle of the cutting tool. You can use emery sharp cutting tool.
To sharpen a leather hole punch tool effectively, use a fine grit sharpening stone or sandpaper to gently sharpen the cutting edge of the tool. Be sure to maintain a consistent angle while sharpening and periodically test the tool on a scrap piece of leather to ensure it is cutting cleanly.
Eliza Swords's birth name is Eliza Niven Swords.
Shawn Swords's birth name is Shawn Thomas Swords.
That means to sharpen tools to make them sharp. For instance, the ancient civilizations would sharpen spears, to them known as tools, to hunt.
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.