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Plans, lays out, and construtcs master full-scale models,
forms, mockups, check jigs, and plaster patterns for casting
master tooling used in manufacturing aeronautical and aerospace
products, utilizing knowledge of plaster patternmaking, metal
forming, and foundry practices and procedures, using precision
instruments, tools, and equipment: Studies engineering tool
design data, loft information, and blueprints to determine
sequence of operations and to develop layout for constructing
master model. Lays out, locates, and aligns steel skeletons and
master contour templates on surface table or other base
structure to form model frame, using precision mesauring
instruments and devices, such as micrometers, calipers, and
transit. Forms plaster over templtae frame and hand finishes
plaster to peripheral dimensions of contour templates, using
scrapers, fairing tools, and other handtools.
Verifies finished
dimensions of master model, using precsiion instruments.
Scribes
butt, water, and station lines on master model to establish
location points, reference lines, and contours for subsequent
patetrn casting. Casts plaster pattern (splash) from sections of
master model, and recasts pattern to produce working patterns of
contour templates, check templates, and related tooling.
May
fabricate master patterns, jigs, templates, or mcokups from
materials other than plaster, such as wax, plastic, and
fiberglass. May cut out and fabricate flat contour tmeplates
from engineering or loft information.
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