What Is a Switchblade? Definition, Mechanisms, and the Law
A switchblade is a pocketknife whose blade is extended automatically by a spring when you press a button, lever, or switch in the handle or bolster. The blade locks open, and an unlocking mechanis...
What Is a Spring Knife? Springs in Folding Knives Explained
Ask five knife people what a spring knife is and you may get five different answers. The Wikipedia entry on the switchblade lists it as one of the many names for an automatic knife: a pocketknife w...
Butterfly Knife vs Switchblade: Key Differences Explained
Butterfly knives (balisongs) and switchblades are both famous folding knives with a reputation for speed — but they open in completely different ways. A butterfly knife is powered entirely by the u...