The equipment is expensive and ages
Sign production runs on large-format printers, vinyl cutters, routers, and sometimes CNC and welding equipment, all of which are costly to buy and maintain. Aging machines mean capital expense you inherit and downtime that stalls jobs. Inspect the equipment, get its age, condition, and service history, and budget for replacements, treating the machinery as a real and depreciating component of value rather than a fixed asset.