from web site
There were also really comparable styles to the balisong produced in England in the late 19th century, presumably also obtained from the pied du roi. However like the latter they were mostly utilitarian tools. Click Here For Additional Info [modify] There are 2 primary types of balisong building: "sandwich construction" and "channel building and construction". Sandwich built balisong knives are put together in layers that are normally pinned or screwed together.
When the knife is closed, the blade rests between the layers. For a channel built balisong, the main part of each deal with 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.
In addition, the two buildings can be integrated to form the "chanwich construction", which includes 2 halves of a channel deal with screwed together. Although uncommon, this building and construction normally keeps the best aspects of both constructions and discards the worst, as it keeps the better deal with shape channel building and construction is known for, while still enabling adjustment of the tightness the deals with are held together with to some extent, in addition to much easier access to the within the manage for cleaning.
There are also 3 techniques of operation balisongs use: bearings, bushings, or only washers. Bearing run balisongs have small ball bearings housed in a circular concavity around the hole in the pivot. These bearings enable the manages of the balisong to rotate. Bushing run balisongs have a small metal bushing a little thicker than the tang in each pivot hole with a generally bronze disc called a washer on each side.
There are likewise washer-only run balisongs which are usually much cheaper and lower quality than the other kinds, as they don't need bushings, however the handles will constantly bind to the tang when the screws are tightened up enough and the washers, tang and manages all wear themselves down much faster due to the increased friction.
Most modern balisongs, such as the Benchmade 51, do not use Tang Pins. Instead, they use "Zen Pins", which are two small pins embedded in the top of the handles of the balisong which make contact with the bottom of the blade. A balisong with zen pins negates the issue of having the tang pins fall out (as is common of some cheaper designs).