Select the primitive to display its graphical handles.
Each primitive has handles similar to a workplane's graphical handles, as shown below. Other graphical handles which appear are unique to each primitive.
These workplane type handles are used to:
The unique graphical handles for each primitive are described below. In general:
As you drag the handle, the new dimension is displayed on the screen. How the dimension value increases and decreases depends upon the zoom factor. To work with small increments, zoom in; to work with large increments, zoom out.
The drag handles of primitive surfaces snap to other geometry in the model
Select an edge and drag to change the width or length of a plane:
Select a corner handle and drag to move the corner to a new position. This will automatically convert the surface to a Power Surface:
Select the top handle and drag to edit the height of the block.
Select the edge handles and drag to edit the draft angle of a side.
Select an edge and drag to change width or length of the block.
Select and drag a blue curve to edit the radius of the sphere.
Select the top handle and drag to change the height of the cylinder.
Select the edge and drag to change the radius of the cylinder.
Select the top handle and drag to change the height of the cone.
Select the top edge and drag to change the top radius of the cone.
Select the bottom edge and drag to select the base radius of the cone.
Select the inner curve and drag to change the minor radius of the torus.
Select the outer curve and drag to change the major radius of the torus.
Select one of these handles and drag to change the base radius of the spring.
Select this handle and drag to change the top radius of the spring
Select the top handle and drag to change the height of the spring.
Use the blue handles to edit the length and negative length of the extruded surface.
To edit the length, select the top handle and drag it to the required height.
You can also drag the handle in the negative Z direction: