Embodiments of the invention allow the efficient detection of glitches in a set of data. The case includes a bottom wall defining a receiving recess. A scissors for cutting a pattern in a substrate having a first patterned cutting blade partially covered by a first overmold shield and a second patterned cutting blade operatively connected to first blade and partially covered by a second overmold shield is provided. A special clamping strip connects adjacent individual segments together to form the roller.