Really good video. This can be used for many different cutting tools! I was taught to sharpen axe's when I was a kid, a file can be used to build of fix an edge as well as maintain during use. Combine with good stone work when the chance arrives, and you have a really good tool when needed. FYI, A good flat river rock can also be used to build or repair most cutting edges and can also keep one sharp during lots of use!
Thank you!! the problem with Hawaii is we don't really have any decent sharpening stones it's mostly all lava rock.
yes in a survival situation I could find some concrete maybe not in the deep deep deep jungle more in the country farmland jungle....concrete can work I like a good Japanese Waterstone for sharpening and use concrete to flatten my store-bought sharpening stones when they're in need of repair. I use a file to sharpen my garden tools
