Old saw blades are made of “spring steel,” so they are highly flexible; this limits the use of the knife, but because most saw blades are made of carbon steel, it will hold a very sharp blade for a very long time.

This video shows step by step and apart from the machinery required, is an incredible way to use up old saw blades and make yourself a durable utility knife.

In a survival situation, having an array of knives is critical to being able to do what you need to do during an average day.

One way of making yourself a flexible utility knife with a very sharp blade is to use old saw blades.

Do you have ideas as to how to make this knife even better and more useful than it already is? Tell us below.