Editing Pin System (section)

====Screw Zen====

The screw zen system is only used in [[Construction#Channel]] or [[Construction#Sandwich]] construction knives. The screw zen pin system uses a [https://thetruelink.com/products/5-32-shoulder-pin?_pos=1&_sid=667aadb5d&_ss=r threaded shoulder pin], or just a [https://thetruelink.com/products/3-16-stainless-straight-pivot-6-64 threaded barrel]. Threaded shoulder pins are usually held in place by a small cutout in the handle in which the pin snaps into place, making the screws not necessarry for this type of construction to work. The problem with this type of Pin System is that over time the should pin will press into the handle, reducing the space between the handle and the blade. As a result, your balisong will bind if you crank the zen screws. You can temporarily fix this by using thinner [[Washer|washer]]s, not using zen pin screws or by using very oversized bushings. If the problem becomes too severe, only replacing the slab or liner will fix it. The barrels, however, are usually held in place by just the screws, meaning that no part of the barrel is pressing into the handle. An example for a balisong with a threaded shoulder pin is the [[Bladerunners_Systems_Replicant|Replicant]] and an example of a screw barrel system is the [[Henninger_Design_Telesto_v3|Telesto v3]].

The screw zen system is sometimes called "Tunable zen system", implying that it can be tuned. This is however misleading because if your balisong [[Bind|binds]] when tightening the zen screws, the issue usually never lies with the screws, but somewhere else. If you want to learn more about this, check out [[Pivot_System#Unexpected_Binding]].