Isometric pictorials l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 33

Isometric Pictorials PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

Isometric Pictorials. Goals Creating an isometric sketch. Introduction to Projections Four Basic Types. Note: An Isometric is special case of an Axonometric. Orthographic Projections. Axonometric. Pictorials. Oblique. Perspective. Introduction to Isometric Projection. CUBE.

Download Presentation

Isometric Pictorials

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Isometric pictorials l.jpg

Isometric Pictorials


Creating an isometric sketch

Introduction to projections four basic types l.jpg

Introduction to ProjectionsFour Basic Types

Note: An Isometric is special case of an Axonometric

Orthographic Projections





Introduction to isometric projection l.jpg

Introduction to Isometric Projection


  • The term Isometric literally means equal measure

  • All planes are equally or proportionately shortened and

  • tilted

  • All the major axes (X, Y, Z) are 120 degrees apart

Slide4 l.jpg





Isometric Axis

  • Making an Isometric Sketch

  • Defining Axis

Slide5 l.jpg




  • Making an Isometric Sketch

  • Axis Convention

Choose the longest dimension to be the width (or the depth) for optical stability

Front view

Isometric Axis Convention

Slide6 l.jpg




  • Making an Isometric Sketch

  • Axis Convention

Choose the longest dimension to be the width or the depth for optical stability

Front view

Isometric Axis Convention

Usage of the grid paper l.jpg

Usage of the Grid Paper


Incorrect orientation

Note the alignment of the axes

The transformation between the isometric grid rectilinear grid l.jpg

The Transformation BetweenThe Isometric Grid & Rectilinear Grid

Slide9 l.jpg

Object for Practice

Slide10 l.jpg

Front Face



Blocking in the Object

Begin with Front Face

Slide11 l.jpg




Blocking in the Object

Add Side Face

Slide12 l.jpg

Top Face

Blocking in the Object

Add Top Face

Slide13 l.jpg

Adding Detail

Cut Outs – Part 1

Slide14 l.jpg

Adding Detail

Cut Outs – Part 2

Slide15 l.jpg

Adding Detail

Cut Outs – Part 3

Slide16 l.jpg

Darken Final Lines

Part 4


All visible edges

will be darkened

Sketching a circle l.jpg

Sketching a Circle

  • Draw a square whose sides are the diameter of the circle.

  • 2. At the center of each side define the point of tangency for the circle.

  • 3. Draw the diagonals of the square.

  • 4. Orient the paper so you can draw equal arcs to construct the circle

Isometric ellipses l.jpg

Isometric ellipses

  • In an isometric drawing, the object is viewed at an angle, which makes circles appear as ellipses.

  • Holes

  • Cylinders

Ellipses can be in any of three planes l.jpg

Ellipses Can be in Any of Three Planes

Sketching an isometric of a hollow pipe l.jpg

Sketching an Isometric of a Hollow Pipe

Step 1 creating the base box l.jpg




Step 1 - Creating the Base Box

Step 2 ellipse on front face reference technical graphics section 4 2 7 l.jpg

- Corner to corner to get center

- Lines to tangent points

Tangent Points

Lines to Tangent Points

Step 2 – Ellipse on Front Face(Reference Technical Graphics, Section 4.2.7)

Step 3 ellipse on front face l.jpg

Sketch in Arcs

Tangent Points

Step 3 – Ellipse on Front Face

Step 3 ellipse on back face and profile l.jpg

Repeat for ellipse on rear face

Draw Tangent Lines for Profile

Complete Visible Part of Back Ellipse

Step 3 – Ellipse on Back Face and Profile

Step 4 ellipse for hole on front face l.jpg

Create Box for Hole

Sketch Ellipse

Step 4 – Ellipse for Hole on Front Face

Isometric of hollow pipe l.jpg

Isometric of Hollow Pipe

Summary l.jpg


  • Technical drawings are an effective communication media

  • Projections of various types can be used

  • Isometric projections and creating isometric sketches has been introduced

  • Assignments will emphasize simple isometric sketches

Review questions l.jpg

Review Questions













  • _______ sketches present the object in a single view, with all three dimensions represented

  • _______ sketches present the object in a series of projections, each one showing only two of the objects’ three dimensions

  • Which among the following is NOT an isometric axes (Hint: Use the Isometric Grid paper for reference)?

Slide29 l.jpg

Tips for Drawing Assignments

  • Follow Sketching and Text conventions from the reading assignment

  • Refer to reading assignment to clarify questions

  • Title Information is required. Avoid labels on the sketch.

  • Leave the construction lines – MUCH lighter and thinner than the finished lines

  • Include centerlines on isometrics

Slide30 l.jpg

Tips for Drawing Assignments

  • Do not try to shade drawing – this is not a pencil sketching class.

  • Use grid paper. Try to sketch along grid lines. Practice sketching straight lines and curves on a grid sheet.

Tips for pictorial views l.jpg

Tips for Pictorial Views

  • In pictorial views, hidden lines are not shown unless absolutely required for clarity

    • Non-visible bottom of a blind hole

    • Important feature of object not in direct view

  • In pictorial views, holes or notches without bottom/end visible should be assumed to go completely through the object.

  • Centerlines are to be shown on all isometric pictorials.

In class assignment l.jpg

In Class Assignment

  • Drawing 9: TG 2.23, 2.31, 2.37, & 2.38 in course packet

    • Use Isometric Sketch Paper (ISP)

Assignments l.jpg


  • Refer to daily assignment list

  • Login