Make or form wax or sand cores or molds used in the production of metal castings in foundries.

Clean and smooth molds, cores, and core boxes, and repair surface imperfections. Cut spouts, runner holes, and sprue holes into molds. Form and assemble slab cores around patterns and position wire in mold sections to reinforce molds, using hand tools and glue. Position cores into lower sections of molds, and reassemble molds for pouring. Position patterns inside mold sections and clamp sections together. Sift and pack sand into mold sections, core boxes, and pattern contours, using hand or pneumatic ramming tools. Sprinkle or spray parting agents onto patterns and mold sections to facilitate removal of patterns from molds. Lift upper mold sections from lower sections and remove molded patterns. Move and position workpieces such as mold sections, patterns, and bottom boards, using cranes, or signal others to move workpieces. Operate ovens or furnaces to bake cores or to melt, skim, and flux metal. Pour molten metal into molds, manually or using crane ladles. Rotate sweep boards around spindles in order to make symmetrical molds for convex impressions. Tend machines that bond cope and drag together to form completed shell molds.

Building and Construction -- Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads. Production and Processing -- Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.

Operation and Control -- Controlling operations of equipment or systems. Equipment Selection -- Determining the kind of tools and equipment needed to do a job. Operations Analysis -- Analyzing needs and product requirements to create a design. Quality Control Analysis -- Conducting tests and inspections of products, services, or processes to evaluate quality or performance. Science -- Using scientific rules and methods to solve problems.

Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects. Information Ordering -- The ability to arrange things or actions in a certain order or pattern according to a specific rule or set of rules (e.g., patterns of numbers, letters, words, pictures, mathematical operations). Multilimb Coordination -- The ability to coordinate two or more limbs (for example, two arms, two legs, or one leg and one arm) while sitting, standing, or lying down. It does not involve performing the activities while the whole body is in motion. Finger Dexterity -- The ability to make precisely coordinated movements of the fingers of one or both hands to grasp, manipulate, or assemble very small objects. Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position. Near Vision -- The ability to see details at close range (within a few feet of the observer). Static Strength -- The ability to exert maximum muscle force to lift, push, pull, or carry objects. Wrist-Finger Speed -- The ability to make fast, simple, repeated movements of the fingers, hands, and wrists. Control Precision -- The ability to quickly and repeatedly adjust the controls of a machine or a vehicle to exact positions.