✕DO NOT FORCE THE FIT
- Scraping, prying, striking, opening cans — it is a ground cutting edge in a wooden handle, not a putty knife or a pry bar.
- Brittle acrylic and precision molded flash — score-and-snap and V-trim tools, respectively.
- Flooring over a subfloor that must survive — a straight edge pressed through sheet goods scores what is underneath; the captured-throat 67090 hook knife cuts the sheet and not the floor.
- Generic, blade-dulling jobsite cutting — cardboard, wrap, abrasive board. When the cut is generic, feed a disposable blade (utility wing); the square point is for the trade cut worth a maintained edge.
- A carton knife under a safety program — that spec is written for self-retracting knives and round-tip blades, not an eight-inch fixed edge.