| Job Title |
Plastic Duplicator |
| Job Description |
Casts Plastic Reproductions Of Models, Patterns, And Prototype
Parts: Examines Part To Determine Sections That Can Be Cast And
Assembled To Obtain Reproduction. Constructs Boxlike Enclosure
Around Section Of Part To Be Duplicated. Brushes Or Sprays
Surface Of Section With Parting Agent To Prevent Plastic From
Sticking To Surface. Casts Part, Using Either Of Following
Methods: (1) Brushes Plastic Facing Coat On Section Of Part To
Be Cast. Mixes Plastic Resin And Brushes Thin, Uniform Coat Over
Facing Coat. Cuts Fiberglass Cloth To Approximate Size Of Cast
And Places It Over Resin. Brushes Cloth To Smooth It, Applies
Additional Coat Of Resin, And Repeats Procedure Until Alternate
Layers Of Fiberglass And Resin Are Built Up To Specified
Thickness. (2) Brushes Plastic Facing Coat On Section Of Part To
Be Cast, Mixes Plastic Resin, And Pours It Into Enclosure Until
Cast Is Of Specified Thickness. Removes Hardened Cast From
Section. Files, Grinds, And Sands Cast To Remove Jagged Edges
And To Cut Cast Down To Specified Dimensions. Forms Base And
Bracing Structure To Support Cast, Using Handtools And Liquid
Adhesive. May Assemble Casts To Produce Completed Model,
Pattern, Or Prototype. May Bolt Or Otherwise Fasten Metal
Inserts To Casts At Specified Points.
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