Editing Scissor switch (section)

==Internals==
A traditional scissor-switch has two cross-arms, one of which pivots on the baseplate, the other pivoting on the keycap. The opposite ends of each cross-arm slide within guides. The cross-arm mechanism replaces the need for an upper shell with guide shafts for [[slider]]s, reducing both the height and weight of the board. The flat base of the keycap rests directly on the rubber dome.

[[File:Scissor switch mechanism.svg|center]]

The exact design of the mechanism varies between manufacturers.

On ''butterfly''-type scissor switches the legs don't extend below past the hinge, and each leg pivots and/or slides against the bottom on its own side.
Butterfly switches typically have very low key travel, often below 1 mm.