AutoCAD

How to Create Hollow Cylinder in AutoCAD?

Understanding Hollow Cylinders in AutoCAD

Hollow cylinders are essential 3D shapes commonly used in various design projects. To create a hollow cylinder in AutoCAD, follow these detailed steps:

Step 1: Access the Hollow Feature

Begin by navigating to the Solid tab. Here, locate the Feature panel and select the "Hollow" option. This action will bring up the Hollow Solid dialog box, where necessary adjustments can be made to create your hollow shape.

Step 2: Choose the Solid to Modify

Position your cursor over the 3D solid you wish to modify. At this stage, it’s essential to have a solid cylinder created beforehand, as the hollow operation will modify this existing shape.

Step 3: Select the Face to Remove

Click on the specific face of the cylinder that you want to remove. This highlighted face will be the opening of your hollow cylinder. Confirm the selection by ensuring it’s visibly highlighted in the software.

Step 4: Adjust the Offset

Once you’ve selected the face, you can specify how far inward the hollowed part should be. Adjust this using the Hollow Solid dialog. Ensure you input the correct offset distance to achieve the desired wall thickness for your hollow cylinder.

Creating a Solid Cylinder in AutoCAD

If you haven’t yet created a solid cylinder, follow these steps:

Step 1: Navigate to the Modeling Panel

Access the Home tab and click on the Modeling panel. From there, select the Cylinder option.

Step 2: Choose Cylinder Type

At the Command prompt, input "e" for Elliptical if you want to create an elliptical cylinder. Regular cylinders can be made without this step.

Step 3: Define the Cylinder’s Dimensions

Begin specifying the base of the cylinder by choosing the starting point. Next, you should mark the endpoint of the cylinder’s first axis. Following this, specify the endpoint of the second axis, which determines the cylinder’s height and rotation.

Using the Subtract Command for Hollowing Objects

If you aim to hollow out a shape with a different method, consider the “Subtract” command:

Step 1: Create the Inner Shape

Generate a 3D solid that represents the volume you want to remove from the original object.

Step 2: Employ the Subtract Command

Select your primary solid, then activate the Subtract command. Following that, specify the inner solid that should be removed. This will give you the hollowed result.

Utilizing Shell Tool for Shelling

Another way to create hollow shapes is to use the Shell command:

Step 1: Access the Shell Command

Go to the Home tab, and under Solid Editing, find the Shell option.

Step 2: Select the 3D Object

Click on the 3D solid you want to modify to become hollow.

Step 3: Exclude Necessary Faces

Select the faces to be removed and hit Enter.

Step 4: Specify Shell Distance

Input the desired shell offset with precision to determine the thickness of the hollow portion, then confirm the action to complete the command.

Frequently Asked Questions

1. What is the purpose of hollowing a cylinder in AutoCAD?

A hollow cylinder is often used in architectural designs, mechanical parts, and artistic projects to reduce material volume while maintaining strength and aesthetic appeal.

2. Can I hollow out other shapes apart from cylinders in AutoCAD?

Yes, any 3D solid can be hollowed out using similar techniques, such as the Subtract command or the Shell command, making it versatile for different design needs.

3. What should I check if my hollow cylinder isn’t displaying correctly?

Ensure that your face selections are accurate, and check the offset distances in the Hollow dialog box for any discrepancies. Additionally, verify that your solid object properties are correctly set in AutoCAD.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.