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3D Exercise

Here is one way to make a 3D Model By Jos van Doorn
This exercise is to demonstrate the possibilities of AutoCAD as far as 3D is concerned. We're going to draw a nice 3D figure.

We start with drawing an arc. This is the specification of the arc:

Start point : 150,200
Center point: 80,200
End point : 10,200

Next three lines are drawn. The lines come under the arc. This is the specification of the lines:

From: To:

10,200 10,50
10,50 150,50
150,50 150,200

Tip: leave SNAP and GRID on when drawing the arc and the lines. Give them both a value of 10.

The arc and the lines are turned into a polyline. For that the PEDIT command is used. The command is invoked by typing it at the command prompt.

The following prompts are displayed:

Select polyline:
Object selected is not a polyline
Do you want to turn it into one?
Enter an option [Close/Join/Width/Edit vertex/Fit/
Spline/Decurve/Ltype gen/Undo]: j
Select objects: Specify opposite corner: 4 found
Select objects:
3 segments added to polyline

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Related Keywords:autoCAD, CAD

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