Engineering Drawing: Learn Engineering Drawing by Animations

Understand align and unidirectional dimensioning in engineering drawing; align dimensions read from bottom or right and perpendicular to the dimension line, while unidirectional dimensions read from bottom edge and broken.

Explore the shortcut method to draw a regular pentagon with a 25 mm side, using midpoint, perpendicular lines, and arcs with a 25 mm compass.

Learn how to divide a line into 12 equal parts using ruler scale, parallels, and polar scale in engineering graphics.

Learn how to divide a circle into 12 equal parts using a 50 mm radius from a 100 mm diameter, drawing center lines, arcs, and intersection points.

Learn to construct a regular hexagon in engineering drawing with a 50 mm side using compass and arc intersections, then dimension it in the align system or unidirectional method.

Explore the types of lines in engineering drawing, from continuous thick and thin lines to hidden lines, extension lines, center lines, projection lines, and cutting plane lines and related applications.

Explore the classification of engineering curves, including conics (ellipse, parabola, hyperbola), cycloidal curves (cycloid, epicycloid, hypocycloid), involutes (polygon and circle), and Archimedean spiral, with emphasis on eccentricity.

Explore conic sections formed by plane cuts of a cone, including circle, ellipse, parabola, and hyperbola, and learn eccentricity as the focus–directrix ratio guiding each curve.

Discover how to draw an ellipse by the concentric circle method, using major axis 160 mm and minor axis 60 mm, circles, and intersection lines to form a precise curve.

Learn to find the normal and tangent on an ellipse using concentric circle method to locate f1 and f2 and bisect the angle. Then draw tangent perpendicular to the normal.

Draw an ellipse using the rectangle (oblong) method with major axis 100 mm and minor axis 75 mm, and determine the true, normal, and tangent at a chosen point.

learn to draw an ellipse in a parallelogram using the oblong method, with conjugate axes of 172 mm and an included angle of 78 degrees, finished with a compass-based shortcut.

Compute an ellipse through points A, B, and C with AB not as the major axis, then determine its major and minor axes and draw the normal and tangent.

Construct an ellipse with the arc of circle method from a 100 mm major axis and 70 mm minor axis, then draw the normal and tangent at a point.

Apply the directrix focus method to construct an ellipse, with focus-directrix distance 50 mm and eccentricity 2/3, then draw the normal and tangent at any point on the curve.

Explore the rectangle method for parabola construction in engineering drawing, using a 120 m base and 85 m height. Apply a scale, plot p1–p5, and draw the normal and tangent.

Use the parallelogram method to draw a parabola with a 105 mm base at 30 degrees and a 53 mm axis, then plot points and pass through a, v, b.

Explore the tangent method, also called the envelope method, to construct a parabola with a 7.5 m base and 3.4 m axis, using a 1 cm to 1 m scale.

Demonstrate the directrix focus method for parabola by tracing a locus equidistant from the focus and directrix, proving eccentricity equals one, and constructing tangents and normals.

Explains rectangular hyperbola and how to construct it from a point with 40 mm and 30 mm offsets, detailing steps to locate P, P1-P5, and draw the hyperbola.

Learn to construct an oblique hyperbola through a point with reference lines at 75 degrees, using distances of 20 mm from OB and 22 mm from OA, and parallel lines.

Learn hyperbola construction using the directrix focus method with a 50 mm focus and eccentricity 3/2, including drawing the engineering curve, naming the curve, and obtaining normals and tangents.

Learn the foci and vertices method to draw a hyperbola by tracing P, with foci 80 mm apart and a constant distance difference of 48 mm, using compass arcs.

Explore applications of engineering curves in conics: ellipse uses in bridge arches and orbits, parabola in light reflectors and cricket-ball paths, hyperbola in cooling towers and Boyle's law graphs.

Explore cycloid, epicycloid, and hypocycloid—the curves traced by a point on a rolling circle along a straight line or around another circle; learn cycloid construction and tangent and normal.

Learn epicycloid as the locus of a point on a rolling circle outside a directing circle, construct the locus for one revolution, name the curve, and draw tangents and normals.

Examine the hypocycloid, the locus traced by a point on a rolling circle inside a directing circle, and learn to sketch its path and construct the tangent and normal.

Explore the involute of a triangle, the locus traced by the end of a wound or unwound string around a polygon. Draw the normal and tangent at any point.

Learn to construct the involute of a square in engineering drawing by unwinding a 20 mm square with compass arcs of radii 20, 40, 60, and 80 mm.

Learn how to construct the involute of a circle by unwinding a string, then draw the normal and tangent at a point 100 mm from the center.

learn how to draw the involute of a line for five turns from a ten-millimeter line, using compass arcs with alternating centers to construct each turn.

Explore the Archimedean spiral: a plane curve of a moving point with a radius vector rotating at a constant rate, using 40 mm radius to derive its normal and tangent.

Explore constructing an archimedean spiral of one convolution with radii 81 mm and 10 mm, and determine the normal and tangent at a point 46 mm from the pole.

Explore engineering curves by animating involutes of circle and polygon, the ellipse with fixed foci and constant distance sum, and the cycloid from a circle rolling without slipping.

Learn to project a point onto the horizontal and vertical planes, obtain front and top views in quadrants, and use notations a, a dash, and a double dash.

Analyze the projection of a first-quadrant point with respect to HP and VP, exploring three cases and illustrating front and top views, dash conventions, and basic orthographic rules.

Examine projection of points from vp and hp, determine quadrants, and draw front and top views for points R, S, and T using 3d to 2d projection.

Explore projection of points on XY line, locating A, B, C, D via VP and HP distances, and visualize front and top views after 90-degree rotation of the horizontal plane.

Explore projections of lines by drawing front and top views from information on line length, ends, and inclination to the horizontal and vertical planes, including true length and shortened length.

Learn to draw projections of lines in engineering drawing, including case six, by rotating views to obtain true length and true inclination from front and top views.

Project line AB from its true length, with 45° to hp and 30° to vp, locate A on hp, and construct front and top views to compute alpha and beta.

Learn to project line AB with true length 75 mm, inclined 20° to the HP and 30° to the VP, using front and top projections.

Learn how to determine the projection of a line in engineering drawing, including true length, front and top views, and the inclination with hp using given data.

Learn to solve projection of line problems by constructing front and top views, calculating true length and the line’s inclination with both HP and VP.

Explore projections of planes in engineering drawing, including principal and auxiliary planes, and learn to draw front and top views relative to HP and VP.

Learn the three-stage projection method for planes: assume the plane is parallel to hp or vp, apply surface and side inclinations, and finish with the appropriate front and top views.

Explore the projection of plane by solving a pentagon with one side on HP, inclined 45° to HP and perpendicular to VP, drawing top and front views to show stresses.

Explore projection of a plane in engineering drawing using a three-stage method: parallel to hp, 45° to hp, and 35° to vp, with top and front views revealing true shape.

Master the projection of plane by constructing top and front views. Start with a pentagon resting on HP, incline 45° to HP and 30° to VP to reveal the shape.

Explore projection of planes with a pentagon resting on the hp, inclined to hp and vp, and draw top and front views across three stages.

Project a circular plate inclined to the VP by 30 degrees, with center 30 mm above the HP and 20 mm in front of the VP, using a VP-first approach.

Learn projections of planes using a hexagonal plate inclined 45 degrees to the horizontal, with top view showing true shape from the diagonal through corner at 60 degrees to VP.

Learn to project a rectangular plate inclined at 30 degrees to HP with its shorter side in VP, producing a square front view and the top view.

Explore orthographic projections as two-dimensional representations of a three-dimensional object, including the six principal views and the glass box concept, governed by the third angle projection.

Explore orthographic projections and compare the first angle and third angle methods, including quadrant placement, view positions (front, top, side), and their exam-focused differences.

Explore orthographic projection concepts, detailing front, top, and side views with horizontal, vertical, and profile planes. See how observer position and first angle projection determine view placement and dotted edges.

Master orthographic projections by drawing front, top, and side views from the front direction, using planes and dotted lines for hidden edges, per the first angle projection method.

Master orthographic projection by applying the first angle method to construct front, top, and right hand side views from an isometric drawing, using standard dimensions and drawing instruments.

Master orthographic projections using the third angle method to draw front, top, and left views from an isometric figure, with projection boxes, reference lines, and proper dimensioning.

Learn to construct orthographic projections—front, top, and left views—using the first angle projection method from an isometric reference, with reference lines, dimensions, and hidden edges.

draw front, top, and right-hand views using the first angle projection method and align system for dimensioning, using x y and X1Y1 references and observer directions.

Explore sectional orthographic projections, including cutting planes, section views, and hatching techniques, to clearly reveal internal features and facilitate dimensioning.

This lecture covers types of cutting planes in sectional orthographic projections, including straight, bended, and quarter cutting planes, showing a section view formed by removing the part near the observer.

Explore the loci of points in mechanism, distinguishing slider crank and four-bar mechanisms, and compare simple and offset slider crank configurations during one complete crank revolution.

Trace the loci of the midpoint of the connecting rod and the d point in a slider crank mechanism, using 30 mm crank and 120 mm connecting rod.

Investigate the locus of point P in a single slider mechanism by tracing P as the crank rotates with offset distance, producing a smooth curve along the slider path.

Explore the loci of a point in a four-bar mechanism. Learn how crank and follower motion produce the locus P, with opposite-direction rotation and step-by-step construction.

Explore loci of points in a four-bar mechanism by drawing the crank, follower, and connecting link, and plot the loci of p and r through a full crank rotation.

Explore the projection of solids by detailing group a and group b, including cylinder, prism, cone, pyramid, and tetrahedron, and learn base, apex, edge, and generators, sections, and frustums.

Explore the three-stage method to project solids: choose an initial axis perpendicular to hp or vp, incline accordingly, then address remaining inclinations in the final stage.

Apply the three-step method for projecting solids to a square pyramid with axis perpendicular to the HP and parallel to the VP and PP, forming its top and front views.

Explore the projection of a hexagonal prism raised on vp with one base parallel to hp and axis perpendicular to vp, using a three-stage front and top view method.

Project a cylindrical solid in engineering drawing with a top view circle and front view rectangle, diameter 40 mm, height 50 mm, axis perpendicular to HP, using dimensioning rules.

Explain how to project a cone resting on hp using stage i with axis perpendicular to hp; obtain top view circle diameter 40 mm and front view triangle.

Master three-stage projection of a triangular pyramid with 30 mm base edge and 35 mm axis; base is 20 mm above hp and 20 mm from vp, with top view.

Master projections of a hexagonal pyramid through a two-stage approach: establish a perpendicular axis, then incline so a slant edge lies on the ground, using top and front views.

Learn the projection of a pentagonal prism through a three-stage method: axis perpendicular to HP, then incline to HP at 45 degrees parallel to VP, producing top and front projections.

Analyze the two-stage projection of a cone: first with the axis perpendicular to hp, then inclined to hp, ensuring a generator parallel to hp, and construct top and front views.

Explains a three-stage projection of a square prism raised on its base edge, with axis inclined to HP and VP, building top and front views and identifying visible edges.

Learn plane scale construction with decimeters and centimeters, explain representative fraction (rf), and apply a 1:5 plain scale to measure one meter, including 7.3 and 8.6 decimeters.

Construct a plain scale with rf = 1:50 to show eight metres using metres and decimeters, determine the drawing size, and divide the scale into eight parts with decimeter subdivisions.

Construct a plane scale on the Ahmedabad map, where one centimeter equals one kilometer, to measure distance between Gujarat University and Gujarat Science City, including six kilometres and five hectometers.

Learn the three main scales in engineering drawing: full scale (1:1), reducing scale (RF<1, like 1:2), and enlarge scale (RF>1, like 2:1), plus plain and diagonal scales.

Learn to construct isometric and normal scales for 40 and 74 mm in engineering drawing, applying the 0.816 relation to find isometric lengths, with isometric drawing 19% larger than projection.