There is one knife which is known for being able to allow their owners to do tricks with them and those knives are known as Balisong or Butterfly knives. You can learn more about these knivesonline but basically they are a knife with just over a 4 inch blade and with a handle that splits in two. As with some other knives, the Butterfly knife can be inserted into the handle for safety when not in use but as there are two halves to the handle, they can be inserted more easily and in an assortment of different ways. The different ways the blade leaves and enters the handle of a Balisong knife have become known as tricks and if someone is experienced with one of these knives, they can provide a very impressive display of tricks which is the envy of most men and even some women. Unfortunately though, most tricks are hard to learn and in the case of tricks with a knife like the Butterfly knife, you pay a price and that price is that you cut yourself, perhaps even seriously.
This is what happened in the 1940s when American soldiers returning from the Philippines first brought these knives into the country. So many Americans tried too hard to quickly learn all the tricks and the result was a large number had to attend medical facilities. It wasn’t until 1956 though that the American government decided too many injuries were being caused by these knives, even if it was only the owners hurting themselves and so they made the knives illegal. Other countries must have also been having problems as many followed the American example and also made the knives illegal. That probably would not have been a problem today as there are now Balisong training knives available. What this means is that someone can practice the tricks on a trainer which does not have a sharp blade, and only when they are proficient, do the tricks with a real Balisong knife.
Although many originally thought that the Philippines is where Balisong knives initiated from, it may now seem that they had first appeared in Europe a couple of hundred years earlier than they were in the Philippines. This is only a theory at this time but the theory is backed by the fact that a similar knife had sought a UK patent in 1880 but perhaps the more compelling evidence can be found in France’s Musee de la Coutellarie where the exhibit named Pied Du-Roy very much resembles a Balisong knife and is dated back to the 18th century. Whether or not the first knife similar to a Balisong originated in Europe or the Philippines, the name Balisong almost certainly originated in the Philippines as they made then in the Balisung region of the country and that is probably what gave them their name. The name Butterfly knife was later commonly used due to the way the handles open up to allow the blade shelter.