Revolve

In this Task 

A 2D profile will be drawn using a grid as a reference.  This profile will then be revolved through 360º to produce a solid shape.

Associated Tasks 

Drawing a 2D Polyline as a profile.

Using the Grid to draw the polyline.

Before you Start 

Start a new drawing using an appropriate template for 3D design or use the sample drawing for this Session.

Set the view to Front.

Set the Workplane to Plane by Active View.

Create a grid spacing of 5on the X-Y axis.  Display the Grid.

Use the Grid Snap mode to draw the initial profile on the grid intersections.  Remove the grid snap when modifying the profile.

Take Note 

Create layers which are appropriate for this design or use the sample drawing for this Session.

In this example, the layer Model is used and new layers called ‘Plate’ were created.

All profiles are drawn on the layer ‘Profile’ using color ‘Coral’.

Revolve

Ribbon : Draw | Draw 3D | Revolve

Default Menu : Draw | 3D Object | 3D Profile Based | Revolve

Palette : 3D Model | Revolve

A 2D polyline can be used to create a suitable profile which can be revolved about an axis to produce a solid.If the start and end point of the polylines are collinear, then the resulting solid will be a closed, filled area.After the revolve function has been completed, the profile can be modified using the Edit Tool.  A new solid shape will be produced after the profile has been modified

Drawing the Profile

Using the 2D Polyline tool create a similar profile to that shown below.  Remember, each grid intersection represents 5mm.  Take care to ensure that the start and end vertex are collinear, shown below.

If the polyline requires modification, finish the sequence, then use the Edit Tool to modify the profile.  Remove the grid snap when modifying the polyline.

The display of the grid is no longer required. Deactivate the grid using Options | Grid | uncheck Show Grid.

Turn the view to Isometric North East, select the Revolve tool from the menu options above, then left click onto the polyline.

At the prompt > specify the first point of the revolution axis, target the vertex shown in the left tile, below.

At the prompt > specify the second point of the revolution axis, hold down the SHIFT key and drag the cursor downwards, shown in the middle tile below.

The result is shown below right.  In this illustration, the profile has been highlighted for illustrative clarity.

First point of axis

Second point of axis

Profile revolved to produce a solid

By using the Suppress Hidden Lines or Render tools, the flat surface at the top of the dome should be evident, shown below.