I have a small craft knife (almost like a scalpel, really) that's become rather blunt over the years. It's no longer safe to use because it's so blunt, so I need to sharpen it.
What are the safest ways to do this, considering its small size?
If the knife is really that blunt, I recommend taking it to be professionally sharpened. Many craft stores offer this service either as part of their regular services or on a part-time basis (once or twice a month). Otherwise, you may have a knife sharpener in your city who would be able to do it. The cost is generally based on the length of the blade, so should not be very high for your knife.
Unless you have a good-quality mechanical sharpener at home and know how to use it well - or have learned how to use a whetstone and steel, it will be difficult for you to return the knife to the necessary level of sharpness for crafting.
Honers can only realign the blade slightly and are for daily knife maintenance, they can not actually sharpen a knife.
With a so small blade the best is to use a grinding stone. If it is very blunt you will have to start with a coarse grain and finish with a fine one. It will take a long time...
Blades generally have a 15° angle on each side.
V shapeners are quicker but use it with care. Some cuts a lot of steel at once if you push too much. Also it maybe not the easiest to use with a tiny blade.
