Editing Pivot System (section)

==Washer==

The washer pivot system, often referred to as "washer only", uses only washers between the blade and handles. While other systems may include washers as part of a more complex setup (like [[#Bushing|bushing]]s), a washer only system relies solely on the washers.

In this system, the blade is sandwiched between two [[washer]]s, which are usually made out of phosphor bronze. This washer-blade-washer assembly is then clamped between the two handle halves. A sexbolt goes through the entire stack: handle-washer-blade-washer-handle, to keep it from fallig apart. A pivot screw is screwed in from the other side to keep the sexbolt from falling out. At this point, the sexbolt, washers, handles and screw function as a single, solid unit, meaning they move together without any friction between them. The blade acts as a second independent component, meaning it is allowed to freely swing around the handles. The only friction in this systems is between the washers and the blade.

===Tuning Washers===

Tuning a washer balisong is done by adjusting the tightness of the pivot screws. The torque applied to the screws determines how freely the handles rotate. If the screws are too tight, the balisong will bind. If the screws are too loose, the balisong will feel losse and might even tap. After screwing the pivot screws in, [[#Feel|check the tolerances]] and adjust the screws accordingly.

Because a proper tune relies on not fully tightening the screws, you will not get full thread friction retention. This means that the screws are more likely to loosen over time as compared to a [[#Bushing|bushing]] system. To prevent this, some form of threadlocker is typically used.

===Assembling Washer Only===

When you are disassembling an already assembled washer only balisong, make sure to note the orientation of each washer and reassemble everything exactly as it was. There is an exception: Sometimes phosphor bronze washers come with a smooth/rounded and a rough/blocky side. The smooth side should always face the blade to ensure a smooth swing and prevent binding. Some manifacturers overlook this detail and install the washers incorrectly. In that case you should flip the washer so the smooth side faces the blade.