AutoCAD

How To Join Different Objects In AutoCAD?

Joining Surfaces in AutoCAD

To unite surfaces in AutoCAD effectively, follow these organized steps:

  1. Set the View
    Ensure you are in a 3D isometric view to facilitate better manipulation of the surfaces.

  2. Select the Joining Area
    Click on the area within the 3D workspace where you intend to join two surfaces together.

  3. Access Edit In Place
    Navigate to the Space tab and select the Modify panel, and then click on "Edit In Place."

  4. Initiate Join Faces
    On the Edit In Place tab, find the Modify panel options and click on "Join Faces." This enables you to select edges for joining.

  5. Select the Edge
    Click on the edge that separates your two surfaces and press Enter to complete the joining process.

Combining Solids in AutoCAD

To effectively join two solids:

  1. Select the Solids
    Utilize the Objects Browser. Hold down the SHIFT key while clicking on each solid you wish to combine.

  2. Combine the Selected Solids
    Click on the “Edit” button in the left toolbar and then select the “Combine” option.

  3. Check for Success
    Upon successful combination, the Objects Browser will display a single file for the combined solids, and one model will change its color to designate this merging.

Joining Lines in AutoCAD

Joining multiple lines into a single polyline is straightforward:

  1. Select Edit Polyline
    Go to the Home tab, select the Modify panel, and find the "Edit Polyline" option.

  2. Choose Your Objects
    Click on the polyline, spline, line, or arc that you want to edit.

  3. Execute the Join Command
    Type ‘j’ for the Join command.

  4. Select Additional Lines
    Click on one or more lines, splines, or arcs that connect end to end.

  5. Complete the Command
    Press Enter to finalize the merging process of the lines.

Using Facemates in AutoCAD

Facemates provide alignment features for 3D objects:

  1. Select 3D Align
    Navigate to the Home tab and select the Modify panel. Click on the 3D Align option.

  2. Choose Objects to Align
    Select the objects you wish to align using the mouse.

  3. Designate Source Points
    Specify one, two, or three source points from the object you’re moving, followed by corresponding destination points. Start with the first point, known as the base point.

Joining Edges in AutoCAD

To join edges effectively:

  1. Select the Edit Polyline Tool
    In the Home tab under the Modify panel, find and click on "Edit Polyline."

  2. Choose the Object
    Select a polyline or segment (e.g., line or arc) that you wish to modify.

  3. Input the Join Command
    Type ‘j’ for the Join option.

  4. Select Edges to Join
    Click on the edges or segments that are adjacent to one another.

  5. Finalize the Operation
    Press Enter to complete the join operation of the selected edges.

Combining 3D Solids in AutoCAD

For the combination of 3D solids:

  1. Locate the Combine Surfaces Icon
    Find the Combine Surfaces icon in the tool palette or navigate to Surfaces > Combine Surfaces.

  2. Select Surfaces
    Choose the surfaces you want to merge together.

  3. Observe Boundary Changes
    As you select the surfaces, watch for changes in color on the boundaries, indicating the selection is recognized.

Why Lines Fail to Join in AutoCAD

If lines are not joining, consider these factors:

  • Gaps or Elevation Differences
    Ensure that there are no gaps between the lines or that they do not sit at different elevations.

  • Adjusting Precision
    Use the UNITS command to increase the precision settings for better accuracy.

  • Check Properties
    Inspect the Properties palette for discrepancies in Start Z/End Z or Elevation values.

Frequently Asked Questions (FAQ)

Can I Convert Lines to Polylines in AutoCAD?
Yes, you can convert lines to polylines using the Polyline Edit tool. Simply select the line and choose the appropriate option to convert it.

What Does Explode Mean in AutoCAD?
The explode command breaks down compound objects, allowing you to modify each element separately. Common objects that can be exploded include blocks and polylines.

How Can I Align an AutoCAD Drawing?
To align objects, use the 3D Align function, select the items you want to realign, and specify base points to optimize the alignment.

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.