Learn How to Use Extrusion tool to Extend 3D Objects

 |  Moses Zikei

Learn How to Use Extrusion Tool of SelfCAD to Extend 3D Objects

SelfCAD is a complete software that combines modeling, sculpting, and slicing tools, offering an all-in-one solution for 3D design and printing. One of SelfCAD's key strengths is its user-friendly interface. It is designed to be easy to use, so users of all skill levels can navigate and operate the software effectively.

Steps of Using Extrusion to Design a Chair in SelfCAD

In this section, we are looking at how to use the Extrusion tool and the basic shapes, to design a chair. You can check out the interactive tutorial. To begin, start by launching SelfCAD and opening the workspace:

SelfCAD workspace

Use a Cube from the 3D Shapes:

3D shapes in SelfCAD

Set the parameters of the cube as shown below and tick the check mark to finalize the cube:

Setting parameters

Set the rendering mode to Solid + Wireframe. Activate Face Selection and select the regions as shown below:

Face selection in SelfCAD

Select Extrusion from the Modify category and set the Amount to 65 then click Apply:

Exrusion tool in SelfCAD

Set the Amount to 20 and click apply again:

Setting the amount in SelfCAD

Set the Amount to 65 again and tick the check mark to finalize Extrusion:

Extrusion in SelfCAD

Activate the Face Selection again and select the face shown below. Select Extrusion from the Modify category:

Face selection in SelfCAD

Set the Amount to b107.14 and then tick the check mark to finalize the extrusion. This creates the leg support as shown below:

Amount settings in SelfCAD

Activate the Face Selection again and select the remaining faces at the middle of the legs. Use Extrusion from the Modify category and set Individual to true. Set the Amount to 107.14 and tick the check mark to finalize the Extrusion:

Extrusion tool in SelfCAD

The next step is creating the backrest of the wooden chair. To do this, activate the Face Selection again and use it to select the faces shown below: Then select Extrusion from the Modify category:

Modify section in SelfCAD

Set the Amount to 7.5 and open the advanced settings. Set the Number of Copies (Repeat) to 20. Tick the check mark to finalize the extrusion:

Copy offset in SelfCAD

There you go. After creating the copies, activate the Face selection and select the faces shown below:

Face selection in SelfCAD

Select Extrusion from the Modify category, and set the Amount to 21.43 and tick the check mark to finalize the extrusion:

Modify section in SelfCAD

Select the faces as shown below so that we may make the supports for the backrest of the chair. Select Extrusion, and set the Amount to 21.43, and tick the check mark to finalize Extrusion:

Extruding 3D models

Set the rendering mode to Solid + Frame and activate the Face Selection. Select the entire backrest part of the chair. From the Deform category select Bend Tool and set X to 15 then click “X” to close the Deform panel:

Deform tool in SelfCAD

Select the faces shown below and on the Extrusion tool, set the amount to 10:

Face selection

Tick the check mark to finalize the extrusion:

Clicking checkmark

The next step is to give the chair the wood material. Click Materials icon, and set the Material Texture type to Physical and choose Wood; Wood 4:

Materials option in SelfCAD

Set the rendering mode to Solid mode and on the materials set settings to UV and choose Unwrapping mode. Click Generate UV:

Solid option

Tick the check mark to finalize the materials. Finally, the wooden chair is ready:

3D model of a seat in SelfCAD

In summary, this step-by-step guide has shown how to create a chair using SelfCAD's 3D modeling tools. With its user-friendly interface, wide range of features, and cloud-based platform, SelfCAD is a powerful and accessible tool for both beginners and experienced users. After creating your 3D models, you can also use the in-built online slicer of the software to slice your files, as shown below.


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

Need to learn 3D modeling? Get started with interactive tutorials.

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