The SelfCAD's New Sweep Tool: How it Works 

Creating smooth and clean geometry is one of the biggest challenges in 3D modeling, especially when sweeping a shape along a curved path. Traditional sweep methods can sometimes create sharp edges, overlapping faces, or nonmanifold geometry, making models harder to edit and prepare for 3D printing.

To make this process easier, SelfCAD introduces the new Sweep Tool and Solid Mode in it. Unlike the Exact mode, which follows the path closely but may create intersections, the Solid mode generates smoother, cleaner, and fully connected geometry. This makes it a great choice for creating complex shapes while maintaining high-quality meshes.

In this tutorial, you'll learn how to use SelfCAD's new Solid Sweep tool, compare it with the Exact mode, and see how it produces better results in different modeling situations. By the end of the guide, you'll understand when to use each mode and how the Solid Sweep tool can help you create stronger, smoother, and more reliable 3D models.

Steps to Using  the New Solid Sweep Tool

Start by launching SelfCAD and open the workspace:

The Sweep Tool is located at the Tools category:

To explain how the solid sweep tool works, we will use several illustrations, to bring out the former and current transformation that the tool brings. 

Select 3D Sketch in the Drawing category. Use the tools to sketch three profiles as shown:

How Follow Path Works

Select the ‘M’ and the square profile. On the Tools select Follow Path tool:

Choose Bottom/Top plane, and the mesh will look as follows if you preview:

For the Sweep tool, you will notice it chooses the plane automatically for you. Sweep Tool has two modes, that is, the Exact and Solid. 

How the Exact Mode on Sweep Tool Works

In selection with the two profiles as above, select Exact mode of the Sweep Tool. The object will be as follows:

There is not much difference with the follow path tool when using the Exact mode. The mesh has sharp edges:

How the Solid Sweep Tool Works

Select the Solid Mode of the Sweep tool and the object will look as follows:

The edges are more smooth. The shape is not perfect because the profiles used are big. 

When you finalize the edges are as smooth as shown:

Application of the Solid Sweep Tool in SelfCAD.

On the Drawing category, use the Spline tool to sketch the profile:

Select the Sweep Tool, choose Exact mode and preview:

Finalize and select the highlighted face:

You realize that there is an intersection formed which later becomes problematic. You can turn on the Solid Wireframe mode to see the intersection, as shown:

This is nonmanifold. That is the kind of problem that the Solid Mode of the Sweep tool solves. 

Delete that object, then select the object again with the square profile. Select Sweep Tool and this time, use the Solid mode:

Click Preview and the process takes a while. The results will be as follows:

Finalize the object and it brings out a perfect mesh:

Now select the top face and delete it, to be able to see the interior if there is any interaction:

You can see the interior is clean and manifold:

Let us try with the circle profile also. Select the circle profile with out profile 14. Select the Sweep Tool again and use Solid mode again:

Finalize and the object will be smooth and round as follows: 

To see the interior, use the Cut With Plane tool to cut and split the object as follows:

Hide the bottom part of the mesh:

Finalizing, you can see the interior is perfectly manifold and well formed:

The sweep tool and the solid mode brings out the best geometry:

SelfCAD's new Sweep Tool and the Solid mode makes it much easier to create smooth, high-quality 3D models. Unlike the Exact mode, the Solid mode builds clean, manifold geometry with fewer sharp edges and no unwanted intersections, making your models easier to edit and prepare for 3D printing.

In this tutorial, you've seen how the Solid Sweep tool performs in different examples and why it produces better results when working with complex paths and profiles. Although it takes a little longer to process, the cleaner geometry and improved mesh quality make it well worth using.

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Enjoy powerful modeling, rendering, and 3D printing tools without the steep learning curve.

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