A method and apparatus for detecting seals on a film from which bags are formed includes a force transmitter and a force sensor. One aspect of the present subject matter is a capacitor. Stacked die and multi-chip packages are also disclosed. The leading edge of the bifurcation has a non-zero angle of lean in the direction of rotation and a non-zero sweep angle relative to a line perpendicular to the central axis. A pivoting motor mount assembly can be used in conjunction with a portable tensioning tool for tensioning a drive belt.