These blades are rather common and inexpensive compared to other ammunition types. It emits a purple glow when not collected, similar to Power Nodes. They are very abundant in Dead Space, but rarer in Dead Space 2. In Dead Space the blades are first found (as well as the schematic for the disc's) during Chapter 3 on the Engineering Deck. They are normally found in boxes of four (refer to image) which fills half of the Disc Ripper's magazine.