An important factor to consider when buying a knife is its opening system. There are many different systems, of which we leave the characteristics of the most popular, since the rest are variations of these major opening systems.
MANUAL OPENING BLADES
Thumb bolt or Studs
It basically consists of a projection or pin on one side of the sheet that lets you use your thumb to easily open the knife with one hand. Just push against the blade and make the opening movement to open the knife.
This kind of openness is one of the most famous in the world of knives with fork spoon. It is a very useful opening system that brings speed to the action of opening your knife. It is used in the same way as a pin, pushing against the sheet and making the opening movement. Patent opening this type possesses Spyderco, so if another brand intends to use this kind of openness must ask permission.
Emerson opening consists of a small protrusion on the back of the spine that allows whet the knife as we take it out of your pocket or place where the keep. This is beneficial for its speed, but also must take great care and great skill in handling the knife to avoid any mishap.
It is one of the oldest systems that exist and that opening is used in a wide range of knives. It is complicated to use when you have only one hand, so it is not recommended for tactical and military knives.
Before it appeared the opening support system, which can be considered semi invented. This system consists of a small slider mounted on the tang, which lets you open the knife somewhat faster.
This kind of openness can be considered to between manual and assisted opening. It consists of a flap that protrudes from the back of the handle and which allows the knife to open more easily.
ASSISTED OPENING FOLDING
A knife with assisted opening is one in which in which the opening is started manually, but opening a spring leaf ends automatically when it reaches a certain degree of openness, usually from 20 °.
In Spain this type of knives are legal, although a thin line separates illegality. They are not considered switchblades because the first part of the opening is manual, but to finish opening the intervention of a spring is necessary, which can lead to some confusion with switchblades.
AUTOMATIC OPENING BLADES
Knives with automatic opening type are the fastest, are actuated by a spring pulling the blade when you press a button on the handle. Knives with this type of opening is prohibited in many countries, including Spain.
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