| Job Title |
Plaster-pattern Caster |
| Job Description |
Casts And Finishes Plaster Patterns Used In Making Precision
Sand Molds For Dies, Tools, And Machine Parts, According To
Specifications: Constructs Boxlike Enclosure Around Part To Be
Cast, Filling In Cracks And Openings With Clay. Lubricates
Surface With Parting Agent That Prevents Plaster From Sticking
To Part. Mixes Plaster And Pours It Into Enclosure. Reinforces
Plaster With Hemp Fiber And Small Steel Rods Or Heavy Wire.
Removes Hardened Plaster Cast From Enclosure. Patches Broken
Edges And Fractures, Using Clay Or Plaster. Trims Plaster
Pattern To Tolerance By Scraping And Shaping Plaster Surfaces By
Hand Following Blueprint, Using Flat Metal Scrapers. Verifies
Dimensions, Using Measuring Instruments, Such As Calipers,
Vernier Gauge, And Protractor. Makes Identifying Marks On
Pattern With Crayon, Inked Rubber Stamps, Or Pointed Tool.
Shellacs Finished Surfaces To Harden And Smooth Them.
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