A conveyor belt cleaner is provided that is particularly well-suited for high temperature applications. The antenna is not limited to a two dimensional space, but may incorporate conductive antenna elements from an integrated circuit package, a circuit board to which the integrated circuit package mounts, and signal conducting connecting means between the integrated circuit package and the circuit board. The stencils can be used as guides for freehand drawing andor to transform freehand drawings into more precise shapes. The fulcrum portion has a through hole supplying the lubricant to the lubricant discharging portion through the rocker arm body. The logic controller may be configured to poll the logic devices by polling less than all of the logic devices at a time to determine whether the logic devices assert the request for the auxiliary power. According to one aspect of the present invention, the grid-like net structure has a tear-resistant core material that is surrounded by a mantle material.