The legality of a double-edged knife depends on the specific laws of the area where you are located. In some places, double-edged knives are considered illegal because they are classified as daggers or dangerous weapons. It is important to check your local laws and regulations regarding the possession and carrying of double-edged knives.
In most places, double-edged knives are legal to own and carry. However, there may be restrictions on the length of the blade or where you can carry them. It is important to check the laws and regulations in your specific area.
Applicable law (SEE BELOW LINK) does not refer to "butterfly" knives" specifically by that name, HOWEVER - the description of the prohibited knives describes ALL knives having a double-edged blade.In my experience all knives described as "butterfly," "balisong," "gravity knife," etc. (where the blade is concealed inside a hinged/folding handle and can be deployed with a flick of the wrist), HAVE DOUBLE EDGED BLADES. Therefore they ARE illegal.
Serrated steak knives stay sharp longer and are better for cutting crushable items like bread, tomatoes, etc. However, they are almost impossible to sharpen, unlike straight-edged steak knives
Volcanic glass, primarily obsidian, is used to make sharp-edged knives due to its ability to fracture conchoidally, producing very sharp edges. This natural glass can achieve an edge that is sharper than some steel blades, making it effective for cutting and slicing. Additionally, its lightweight and aesthetic qualities make it a popular choice for both functional tools and decorative items. Obsidian knives are often used in surgical applications and by enthusiasts in traditional crafting.
It can be said that understanding itself is a triple edged sword. This is true because understanding has three elements or aspects, the subject, the object, and the knowledge about the object.
In the US, it was illegal for a slave to possess ANY firearm. However, they did have access to edged tools (axes, knives, etc) that could be used as weapons.
It is a large single-edged knife, used to clear a vegetation or simply for cutting.
Washington law prohibits the possession of a "dagger, dirk, or dangerous knife." Dangerous knives are further defined to include switchblades and gravity knives (butterfly knives), but there is no specific definition of dirks and daggers. Most dictionary definitions describe daggers and dirks as long, thin knives designed for stabbing, but some mention double edges. Your safest policy is to refrain from carrying knives with double edges. If you want or need to carry a knife, carry a conventional one with only a single sharp edge.
About 75% of all diamonds mined are employed by industry, because diamonds are the hardest known mineral. Cutting tools with diamond tips and edges are often developed with industrial diamonds. Knives, in the sense of eating, hunting or other common utility, are not edged with diamonds. However, there are scientific uses of diamond knives, and you can read more about them, below. Be aware that these diamonds are gem-quality diamonds, and the knives are priced accordingly.
A rapier (double edged). When three-sided, an epee.
to be edged = neegbal (?????)