Autocad 3D operations

by Design Workshop Sydney

Various 3D operations are combined to create most components in the Autocad 3D interface. We explore the main functions in our Autocad 3D training courses.autocad-3d-operations
For example, to create the 3D Sparkplug shown here, we could modify an existing 2D Drawing. After switching to the 3D interface from the bottom right Workspace Shifter, go to the Top view and either simplify it by deleting extraneous elements or simply use it as a template to draw over. Then delete the original drawing elements. Note that we only need half of the sparkplug.
It’s also recommneded to use the PE command (Polyline Edit)  to join the individual lines into a Polyline, resulting in simpler geometry. Create a centre line around which the terminal, ribs and insulator profile will revolve.
We then use the 3D Revolve function to rotate the polyline around its central axis. In older versions of Autocad we go to: Modify > 3D Operations > 3D Rotate > then choose the axis or gizmo > and revolve it by 180˚.
The hex nut is simply an extruded polygon which is then rotated and moved into place.
For the thread at the bottom you could draw a Helix of base radius 8mm, top radius 8mm and height 7mm. Then use the Sweep command to create a 3D coil from a circular profile.
Lastly for the bottom ground electrode, draw the L-shaped profile and use the Extrude command to push the shape backwards.
When the pieces are put together we would then add materials from the Materials browser, and lighting. Then finally render the image.
The 3d interface in Autocad is user-friendly and easy to learn, and we take time to teach a broad range of applications in our classes including modeling, materials, lighting and animation. See many examples of our clients’ work on our Facebook page. For more information there are lots of resources on the web, but try the Autodesk site to begin with: Support options and user forums are also available from the home page.
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