Final answer:
When using a Tabletop Mat cutter, always place a protective pad under the bar and rod assembly to prevent damage and ensure safety.
Step-by-step explanation:
Always place a protective pad under the bar and rod assembly of the Tabletop Mat cutter. When using cutting tools, it's essential to take safety precautions to prevent damage to the work surface and to ensure your safety. A protective pad will help prevent scratches or cuts on the surface beneath the cutter. In addition to using a protective pad, remember to use gloves, goggles, or safety aprons when instructed to do so. If any glass or sharp materials break, clean them up with a dust pan and broom, and never touch broken glass with your bare hands to avoid injuries.