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Sectional and Auxiliary Views - Geometry, Conventions, and Review - Auxiliary Projector

Detailed instruction in cutting-plane geometry, section methods, hatching conventions, longitudinal exceptions, and primary and secondary auxiliary projection.

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Folding lines, perpendicular projectors, distance transfer, and true-shape recovery

Auxiliary View Construction Studio

Construct primary and secondary auxiliary views, quantify foreshortening, introduce controlled projector errors, and audit projection logic.

Technical drawing viewport

Primary auxiliary view construction

Swipe / pan
PRIMARY AUXILIARY TRUE-SHAPE CONSTRUCTIONFRONT VIEW · TARGET FACE APPEARS AS AN EDGEEDGE VIEW OF INCLINED FACEABREFERENCE X–YFOLDING LINE X₁–Y₁ PARALLEL TO TARGET EDGETRUE SHAPE 120 × 70 · Ø30CONSTRUCTION INVARIANTX₁–Y₁ ∥ edge view of face; projectors ⟂ X₁–Y₁; transfer depth distances from the related principal view. Folding-line distance changes placement, not true shape.
Primary auxiliary view construction. Swipe horizontally to inspect dimensions, annotations, linework, and details at readable drawing scale.

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