Engineering Drawing Course

Lesson 1 • Geometric Construction Basics

Teaches precise construction of geometric shapes using compass, straightedge, and CAD tools. Provides the geometric vocabulary used throughout all drawing types.

Lesson 2 • Lettering and Annotation

Establishes standards for freehand and CAD lettering, notes, and drawing annotations. Correct annotation ensures drawings communicate without ambiguity.

Lesson 3 • Engineering Drawing Standards

Covers international and industry drawing standards governing line types, symbols, and notation. Ensures drawings are universally readable by professionals.

Lesson 1 • Principles of Orthographic Projection

Explains first-angle and third-angle projection theory and their global usage. Connects projection theory to the practical layout of engineering drawings.

Lesson 2 • Hidden and Centre Lines

Teaches correct application of hidden lines and centre lines to reveal internal and symmetric features. Proper line usage prevents misinterpretation of part geometry.

Lesson 3 • Visualisation and Sketching

Builds spatial reasoning through freehand sketching of multi-view drawings. Rapid sketching supports design communication before formal drawings are produced.

Lesson 4 • Drawing Standard Views

Covers construction of front, top, side, and auxiliary views from 3D objects. Students practise transferring dimensions accurately between views.

Lesson 1 • Section Hatching and Conventions

Establishes rules for section lining, material symbols, and features exempt from hatching. Correct hatching ensures accurate material and assembly interpretation.

Lesson 2 • Cutting Plane Theory

Explains how imaginary cutting planes slice through objects to reveal internal geometry. Establishes the conceptual basis for all sectional view types.

Lesson 3 • Offset and Aligned Sections

Teaches offset cutting planes that pass through multiple features and aligned sections for angled elements. Expands sectional capability to complex part layouts.

Lesson 4 • Full and Half Sections

Covers construction of full and half sectional views for symmetric and asymmetric parts. Students choose the appropriate section type based on part geometry.

Lesson 1 • Isometric Drawing Fundamentals

Covers isometric axes, scale, and the construction of basic isometric views. Isometric drawing is the most widely used pictorial format in engineering.

Lesson 2 • Oblique Drawing Methods

Teaches cavalier and cabinet oblique projection for objects with complex front faces. Oblique drawing preserves true front-face shape, simplifying curved feature representation.

Lesson 3 • Perspective Drawing Basics

Introduces one-point and two-point perspective for realistic engineering illustrations. Perspective drawings communicate spatial relationships to non-technical audiences.

Lesson 1 • Limits, Fits, and Tolerances

Introduces bilateral and unilateral tolerances, limits of size, and standard fit systems. Students assign tolerances that balance function with manufacturability.

Lesson 2 • Dimensioning Best Practices

Covers rules for avoiding redundant, incomplete, and over-dimensioned drawings. Reinforces functional dimensioning aligned with manufacturing and inspection needs.

Lesson 3 • Size and Location Dimensions

Covers dimensioning of linear, angular, radial, and diameter features. Students apply size and location dimensions to fully define part geometry.

Lesson 4 • Dimensioning Principles and Terminology

Defines dimension lines, extension lines, leaders, and arrowheads per drawing standards. Establishes the vocabulary and rules governing all dimension placement.

Lesson 1 • Orientation and Location Tolerances

Covers parallelism, perpendicularity, angularity, position, and concentricity controls. Students relate features to datums using orientation and location callouts.

Lesson 2 • Introduction to GD&T Concepts

Explains why GD&T replaces coordinate tolerancing for complex parts and introduces the symbol language. Connects GD&T to functional design intent and manufacturing.

Lesson 3 • Runout and Assembly GD&T

Introduces circular and total runout controls and applies GD&T to assembly drawings. Students evaluate complete GD&T schemes for functional correctness.

Lesson 4 • Form and Profile Tolerances

Teaches flatness, straightness, circularity, cylindricity, and profile tolerances. Students apply form controls to surfaces and features without datum references.

Lesson 1 • Subassembly and Installation Drawings

Introduces subassembly drawings and installation drawings for complex multi-level products. Students organise drawing hierarchies for large engineering projects.

Lesson 2 • Assembly Drawing Fundamentals

Covers the purpose, content, and layout of assembly drawings showing parts in their working relationship. Assembly drawings guide manufacturing, inspection, and maintenance.

Lesson 3 • Drawing Notes and Specifications

Teaches general and specific notes, material callouts, surface finish symbols, and process specifications. Notes complete the manufacturing information not conveyed by geometry alone.

Lesson 4 • Detail Drawing Requirements

Defines the content, format, and completeness criteria for a manufacturing detail drawing. Students apply views, dimensions, tolerances, and notes to a single part.

Lesson 1 • Sheet Metal and Flat Pattern Drawings

Covers bend allowance, flat pattern development, and sheet metal drawing conventions. Students produce flat patterns that unfold correctly for fabrication.

Lesson 2 • Structural and Civil Drawing Basics

Covers plan views, elevations, sections, and standard symbols used in structural drawings. Students connect orthographic skills to civil and structural engineering contexts.

Lesson 3 • Piping and Fluid System Drawings

Introduces piping isometrics, P&ID diagrams, and flow line conventions for fluid systems. Students interpret and produce basic piping drawings used in process industries.

Lesson 4 • Electrical and Schematic Drawings

Introduces schematic, wiring, and panel layout drawings using standard electrical symbols. Students distinguish between schematic and physical wiring representations.