Abstract: A cover or lid of lightweight relatively flexible material including a circular top having a plurality of first planar segments circumferentially spaced along the circular top. Each first planar segment is connected to an adjoining first planar segment by a plurality of first inclined surfaces defining a plurality of first trapezoidal grooves. A sidewall is integrally formed with and extends downwardly from a peripheral edge of the circular top. The sidewall has a plurality of second planar segments circumferentially spaced along the sidewall with each second planar segment connected to an adjoining second planar segment by a plurality of second inclined surfaces defining a plurality of second trapezoidal grooves. The plurality of first planar segments and first trapezoidal grooves of the circular top are aligned with the plurality of second planar segments and second trapezoidal grooves of the sidewall.

Abstract: A film cutting apparatus includes a guide having a clip for attachment to a film material container and a cutting device designed to travel along said guide to sever the film material in predetermined lengths. The cutting device includes two pairs of guide wheels designed to travel in a channel in the guide beneath the cutting plane defined by a top surface thereof. The cutting device also includes a housing having disposed therein a star cutter, a star cutter driver assembly and a plate assembly attached to the housing providing rotatable support for the star cutter driver assembly and guide wheels. In use, the housing is gripped by a user and driven along the length of the guide. During housing travel, the star cutter driver assembly rotatably engages the guide top surface to rotate the star cutter and sever the film material lying in the path of the star cutter. The guide has a non-slip top surface so that the film material adheres thereto during cutting.