A Manual Casters job description involves manually pouring and regulating molten metal into molds to produce ingots or other castings, using ladles and hand-controlled mechanisms. Responsibilities include preparing molds by ensuring they are clean and coated, monitoring and adjusting heating elements to meet metal specifications, and removing solidified castings from molds using hand tools and equipment like chain hoists. This role also involves collecting samples, managing scrap for recycling, and performing basic maintenance on equipment and the work area to uphold safety and quality standards.