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A switchblade is an automatic knife which opens on its own. It acts on a spring which opens up the blade. The blade is always open in a sense that there is no mechanism to stop the blade once the button is pressed. The blade is totally and instantly released when the open button is pressed. It is against the assisted knives which require double action for the switchblade to open up. You can buy switchblade automatic knives if you are looking for an instant opening up knife. Although this is fraught with bit danger, the knife opens up by pressing the release button only once. On the other hand, the assisted knife is not totally automatic. It means even the switch is pressed once, the knife does not open up. You can pick up a switchblade knives for sale online which is much easier than visiting a store online. An assisted knife has a foldable blade which is folded into the body of the knife. This kind of knife needs to be 'assisted' for opening it. The knife is designed in a way that the blade is folded into the body or handle of the blade. Under this category the user is required to complete the remaining process, that is, he or she is required to do the work of pulling the blade out. By pressing the switch, the blade opens at 45 degrees from where the user has to complete the remaining action or to pull out the blade. Switchblades were glorified by movies in the second half of the previous century. It resulted in street crimes and was declared illegal swiftly. They gave place to the assisted opening knives which were required to be operated by hand. In the US, agencies like police and fire fighters are authorized to keep and use the knife. Only the authorities can keep the knives and use it in self defense or pro-actively. There are few points to remember when going for the assisted knives. For example, it is made up of stainless steel which does not mean that it would not rust anytime in the future. In spite of the material used, it could get rust over time. One precaution that you must taken is to ensure that you fold and keep the knife only after drying up the blade. As moisture gets rust to blade, it must be dried up before being folded and kept back. One way to keep the blade ever ready is to oil it. So you must take all the precautions and steps for keeping the blade rust free and lasting. About the author: The author talks about automatic knives here. He explains the different aspects of the automatic knives.
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