Signkey CNC Knife Cutter ES-R1625ODKey Aspects: The machine operates by using various types of knife tools (e. g. oscillating, tangential, or drag knives) that physically slice through the material. Unlike traditional methods involving heat (laser cutting) or rotating tools (CNC routers), knife cutting is a "cold" process, preventing material damage like burnt edges or melting, which is essential for heat sensitive materials. A vacuum system typically holds the material securely on a