Moving along the design process for the air hockey paddle, I’ll create a second cylinder within the original cylinder that I created in my previous post. Since I want the two cylinders to be concentric, I’ll use the center object snap. As you might imagine, a cylinder has two center object snap points- one at the base and one at the top.
It doesn’t matter which one I choose because it’s easy enough to change later as my design evolves. For now, I’ll go ahead and pick the center osnap at the bottom of the existing cylinder. I’ll also pick rough points to define the radius and height for the new cylinder. I, of course, could enter exact values as well.
I’ll continue creating the air hockey paddle by drawing a sphere at the top of the cylinder. The Sphere tool (SPHERE command) is available in the solid primitives flyout of the Modeling panel (with the 3D Modeling workspace current).
Drawing a sphere is much like drawing a circle. You can use the default center/radius option or choose from 3Point, 2Point, and TanTanRadius.
I’ll use the default center/radius option and place it at the center of the top of the cylinder then use the quadrant osnap to specify the same radius as the cylinder.
Even if you’re completely new to 3D design in AutoCAD, these tools should feel familiar based on your 2D experience.
Key concept:
• Sphere tool creates a 3D sphere similar to creating a 2D circle
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