WORK PROCESS
CARPENTER, MOLD
O*NET/SOC CODE: 47-2031.01 RAPIDS CODE: 0762
Description: Constructs and repairs wooden brick-and-tile molds and patterns or constructs wooden forms for molding concrete mixtures in manufacture of concrete products, and performs general maintenance carpentry duties: Lays out and marks measurements on material from blueprints, drawings, or samples, shapes material to size with hand tools or power saw, fits mold sections with hand plane, chisel, or jointer, and joins sections with wood screws to construct new molds or patterns. Removes damaged or worn parts and fashions and screws new parts in place to repair molds. Perform general maintenance carpentry, such as repairing wooden doors, sills, floors, and stairways. May cut sheet metal mold linings and edge coverings to size, using chisel, hacksaw, and shears, and screw them in place. May make rubber molds when irregular surfaces (undercuts) of product require flexible molds. May make plastic molds by applying successive layers of liquid plastic and fiberglass cloth around model.
ON-THE-JOB TRAINING
APPROXIMATE MONTHS
1. Operate the essential machines used in mold making trade.
a. General shop practice.
6
2. Rough cavities
6
3. Stone and polish cavities. Fit cavities to shoes and die plates.
6
4. Mill, turn and grind cavities
6
5. Drill, tap, ream and lap. Operate lathe with turret attachment.
6
6. Line up back and front cavities to miter.
6
7. Bore shoes and die plates for die cavities to fit into them.
6
8. Sink hubs in die cavities, fit and assemble into complete mold.
6
9. Gate molds. Use blueprints and specifications.
6
10. Make cavities that do not require hubbing, using lathes,
horizontal millers or vertical millers.
6
11. Execute the more intricate work that requires close tolerances.
6
12. Mold design and engineering
6
TOTAL HOURS
72
