Straight Edge or Serrated Edge?
Once again, the type of knife edge that you choose will depend on what you intend to use it for. It is possible to buy folding knives which have 1 straight edge blade and 1 serrated edge blade. It is also possible to buy blades were a section is serrated,
although many survival specialists say that these knives actually miss out on the best bits of either style. Serrated edges are great for cutting through things, such as rope, wood or metal, whereas straight edge knives are better for all-round use. It is also much easier to make sure that a straight edge blade stays sharp.
Carbon steel and stainless steel are the two main materials that knives are made out of. Although carbon steel is normally stronger, it rusts more easily than stainless steel does, and therefore requires careful maintenance. To keep carbon steel in good condition, you must wipe it down regularly with mineral oil.