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SolidWorks Boundary Boss or Base Tutorial_SolidWorks Tutorials 33

Hi friends, welcome to SolidWorks tutorials for beginners and in this tutorial post, you can see how to use SolidWorks boundary boss feature tool. Boundary boss or base tool is also like the other boss features such as Extrude boss, Revolve Boss, Swept Boss, Loft Boss etc; but much more advanced tool in terms of SolidWorks CAD applications. It helps to create complex designs which can’t be creating using other boss feature tool. In this tutorial I am going to share about SolidWorks boundary boss or base and a step-by-step example for using it in this CAD software.

What is SolidWorks Boundary Boss or Base and How to Use it?

SolidWorks Boundary Boss or base is tool used to create feature by adding material in two directions. That means, you can add materials between two profiles between two boundaries. Loft boss is also like Boundary Boss feature, but it adds materials between two profiles. As compared to Loft boss, Boundary boss helps to add materials between two direction, even between two solid features. It helps to create more complex designs even curved bodies which is very difficult to create with Swept boss.

In this example, I going to show you how to apply boundary boss or base feature tool to two sketch profile. Here, I am going to create one closed profile (e.g: circle, Rectangle or polygon) and one open sketch (curve) profile. Then, I will show you how to apply this feature tool to these sketch profiles.

Watch SolidWorks Boundary Boss/Base Video Tutorial:-

Note: This is just tutorial showing how to use boundary boss or base tool, not showing any product drawing or designing in it. If you are advanced SolidWorks user please avoid it. This Solidworks tutorial is for beginners, students or people likes to learn about SolidWorks.

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Step 1: Create New Part File

Open SolidWorks CAD software. Click on the ‘New’ button from the quick access toolbar or from file menubar. From that, select ‘Part’ and click ‘OK’. Then you can see the Main user interface of solid works modeling software.

File -> New -> Part -> OK

Select the default “Top Plane” from the Features DesignTree manager. Go to Heads-up toolbar and click on “View Orientation” and click on “NormalTo”. Then you can see the Top plane view changes from isometric to XY plane.

Step 2: Draw Two Sketch Profiles

For creating the closed profile (e.g.: circle), you have to go to the sketch toolbar and select “Circle sketch tool” from it.


Then Draw the circle by fixing the center on the origin of the drawing sheet (graphics area). And drag it to outwards and again click on it to create circle.


Using the “SmartDimension tool” you can set the dimension of the circle to “75 mm”.


Related SolidWorks Features Tools Tutorials:-

Then for creating the open sketch profile (e.g.: curve), go to the features DesignTree manager and select the “Right plane” which perpendicular to top plane.


Using the NormalTo view orientation tool, make to 2D plane.


Then go to sketch toolbar and select “Spline sketch tool” and draw curve perpendicular to circle profile.


Make sure that, it should intersect with the closed sketch profile (circle).


Here you can see the sketch 1 and Sketch 2 profiles.


Click on “Exit The Sketch” button from The Sketch command manager.

Step 3: Select SolidWorks Boundary Boss or Base Features Tool

From Features Command Manager


Go to Features Command Manager, click on the “Boundary Boss/Base” feature tool.

From Menubar


Click on “Insert Menu” and from drop down menu, select “Boss/Base” feature. Again you can see side drop down menu and select “Boundary” from it.

Then, you can see the Boundary boss property manager.

Step 4: Apply Boundary Boss or Base Feature Tool

You can see the two direction boxes in Boundary Boss property manager such as “Direction 1 and Direction 2”.


In “Direction 1” box, select “1st sketch (circle)”; from the Features designtree manager, click on the “Sketch 2” which is shown in the figure.


Then, Go to “Direction 2” box select the “2nd sketch (curve)” and also select it from the features designtree manager. Then you can see the preview of boundary boss model.


Click on the green tick button to confirm it. And you can see the final image of the model using Boundary boss feature.


You can also see the section view by clicking on “Section View”.


Note for Readers: Using SolidWorks boundary boss or base tool you can easily create more complex designs.

This is just basic boundary boss tool application and you will see more soon.

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