What tool should technicians use to row-cut the installed piece when replacing a large damaged section of glue-down carpet?

The tool that is most suited for row-cutting an installed piece when replacing a large damaged section of glue-down carpet is the cushion back cutter. This specialized tool is designed to cut through the cushion backing of the carpet without damaging the face fibers. When replacing a section of carpet, especially in cases where precise cuts are necessary to ensure a seamless fit with the new piece, the cushion back cutter allows for accuracy and control. It helps in creating straight lines and clean edges, essential for proper alignment and adhesion once the new section is installed.

In contrast, while a utility knife may also be used for cutting, it might not provide the same level of precision required for row-cutting on specific carpet types. A carpet knife, similar in function to a utility knife, is more general-purpose and may not be as effective in achieving the delicate cuts necessary for this particular task. Scissors, while they can cut, lack the effectiveness and precision of a specialized cutting tool like the cushion back cutter, particularly on thicker or glued-down carpet materials. This makes the cushion back cutter the optimal choice for this specific application in carpet repair and replacement.