So what is a survival knife trick?  Well when it comes to survival knives, many different options come up. Small Swiss Army Knives are one version, while much larger fixed blade knives will often be favored by the experts. Having a knife isn't enough in and of itself, as a good tool doesn't do any good without knowing how to use it.  That said, there's also only so much you can do with an inferior tool.  However, there are several tricks to getting the most out of, or else even create your own from scratch.  Speaking of which...

Creating a Survival Knife
Some of the most useful tricks revolving around survival knives involve knowing how to make them. Cheap survival knives can be made using tools like belt sanders and files and using hacksaw blades or pieces of metal that are sharpened and carved into solid blades great for short term use in a survival situation. Leather, pieces of wood or other similar materials can be fastened together to create handles for these blades, which all together can be used for survival situations.  If you want to go very primitive, learn primitive survival skills that often teach how to use a large rock to make a solid knife from another rock.

Knife as Firestarter
While using flint with a knife is the easiest way to start a fire, flint is not necessarily required. Many different types of rocks work to provide sparks when a steel knife is struck against it. White quartz is one example of a rock that works well, but the key is to make sparks. A knife blade can also be used as a good surface for a strike anywhere wooden match if you happen to have those on your in a survival situation.  Look for any rock that allows you to make sparks, and while in theory a sharp enough knife can focus light, this is an incredibly difficult method and impractical if magnifying glasses are on hand.  Look for ways your knife can help start a fire, including the carving of small thin notches into bark, small tinder, or birch bark to make them even more apt to take fire.

Sharpening Tricks
Smart survival experts carry knife sharpening stones with their gear, as these make keeping the knife sharp extremely easy. These factory produced stones are not necessary to keep a sharp knife, however. Many large rocks with a flat surface in the wild can be used to sharpen survival knives. Even a chunk of broken concrete can work as long as a piece has a flat surface and you learn how to use the right technique.  There are tons of videos online about how to do this, and basic courses should always teach this skill.  The key is looking for large flat rocks, which are easiest to allow you to quickly and efficiently sharpen a blade.

Open and Creative Mind
Real life survival stories burst with examples of people using a knife in a creative or original way based on the situation. Survival knives can be tied to a branch to make a spear, cut bark or vine rope to help build a shelter, or dig up grubs and bugs from rotting logs or the ground. A very sharp survival knife can be used to help climb, or for a variety of other uses. The tool is limited only by the creative mind of the person using it.