Construction
There are two main types of Balisong construction: "sandwich construction" and "channel construction".
Sandwich constructed balisong knives are assembled in layers that are generally pinned or screwed together. They allow the pivot pins to be adjusted tighter without binding. When the knife is closed, the blade rests between the layers.
For a channel constructed Balisong, the main part of each handle is formed from one piece of material. In this handle, a groove is created (either by folding, milling, or being integrally cast) in which the blade rests when the knife is closed. This style is regarded as being stronger than sandwich construction.
Some of the blades of traditional Balisong knives in the Philippines were made from steel taken from railroad tracks thus giving them durability and hardness, while others are made from the recycled leaf springs of vehicles.
Read more about this topic: Balisong (knife)
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