1. ISOMETRIC IN AUTOCAD

2. Outcomes of today’s lecture
Able to explain in producing Isometric drawing in AutoCAD

3. Setting up isometric grid/snap
The grid/snap style should be changed to isometric snap
Right click on grid button on status bar, choose ‘Settings…’
Drafting setting window displaying Snap and Grid tab is displayed

4. Setting up isometric grid/snap
Rectangular
Isometric

5. Changing isoplane Changing the isoplane – left, top, right
Cycle by pressing CTRL+E or F5 or
Command: isoplane {enter}
Right
Top
Left

6. Drawing lines, circles and arc
Isometric lines and non-isometric lines can be drawn using line or polyline command
Isometric circle can be drawn using ellipse command
Draw ellipse > isocircle
Isometric quarter circle and semi circle can be drawn using ellipse arc command
Draw ellipse arc > isocircle

7. Creating round corner Before After Draw ellipse arc Draw another
Draw straight
line from
midpoint of
top arc to
midpoint of bottom arc
Trim
Trim
Trim

8. Dimensioning Use aligned dimension for linear dimensioning
Use quick leader for isocircle
Aligned dimension
Quick leader

9. To make dimension aligned with isometric axes, follow few steps as:
- Type DIMEDIT
- Type O for Oblique
- Select the dimension to be aligned, then Enter
- Specify the obliquing angle
For example, using the object above, for clockwise alignment such
as 90, type 30 for the angle, whereas for 100, type -30 for the angle
since anti-clockwise alignment.

10. Dimensioning for Isocircle
Select Quick leader icon
Select the circle, then extend the leader line to appropriate
direction, click, then make short extension in horizontal direction,
click,then type corresponding value (example: R20)
for the dimension.

11. Other useful tips
Use COPY command with polar relative coordinate system or OSNAP.
Do not use OFFSET command.
Set up LAYER before drawing.
Use construction line as a guide (recommended to use different colour)

12. Conclusions What has been covered today:
Producing isometric drawing using AutoCAD

13. What is next? You will complete the Tutorial on creating Isometrics.
After completing the Tutorial and turning in your print. You will revisit Packet 2 and 3. You will complete 6 total Isometrics for the two packets (your choice on which 6). Each is worth 10 points. Dimensions MUST be included.