Welcome to the article dedicated to SelfCAD's 3d modeling tool called Twist, in which I'm going to explain all of its ins and outs, as well as present its applications. The Twist is one of the Deform tools available in SelfCAD and, as its name suggests, it allows you to deform selected figures or their regions, by rotating the figure around itself on one of the axes. Deform tools, in general, rely heavily on the level of the detail of the object, so by increasing its resolution beforehand, you will achieve much smoother deformations.
Select the object
The first step of using any tool is selecting an object, on which you want to use it. You can do it by either left-clicking on the object in the grid (workspace) or by selecting it from the Object Management section in the Right-Side Panel.
Activate the tool
Once the object is selected, you can access the tool itself. To activate the Twist tool, you need to choose it from the Deform drop-down in the Main Toolbar, or use a shortcut, by pressing the ‘D+W’ combination on your keyboard. This way, you’ll open the Tool Setting panel with all of the available, customizable features for this tool.
Now you can start twisting the object. As usual in SelfCAD, there are two ways of doing that. The first option is by dragging the gizmos around the selected axis to twist the object in the desired direction. Selecting a gizmo will open up a protractor, which will serve as a visual help in measuring angles.
The second way to twist the object is by typing in the angle of rotation into one of the three text-boxes. There is also the possibility to select the check-boxes next to them, which will copy the typed value between the selected axes.
In SelfCAD, you can not only twist the whole figures but their regions as well. It requires you to enter a specific selection mode by choosing it on the Interactive Rectangle in the Right-Side Panel and then selecting the region of the figure you want to skew.
Twisting regions works on the same premise as twisting the object did: you can do it either by dragging the gizmos around their respective axes or by typing in the angles of rotation into the text-boxes.
Below are the Advanced Settings of the Twist Tool. The first option is called Origin, which sets the height at which the gizmo will be placed. You can use this feature to set a point, around which the figure will start twisting.
Manual gizmo position
Manual gizmo position is rather self-explanatory. It's an extension of the Origin feature, but instead of setting the placement of the gizmo on the vertical axis, the manual gizmo position allows you to place it horizontally.
There is another advanced setting available for region selection called Individual Transformation, and to enable it you need to select at least two faces. This option forces the Twist Tool to deform each selected region independently from each other.
And that's all there is to the Twist feature. After reading this article, you should know the basics of the Twist tool and how to use it, know about its different applications and how to use and customize its advanced settings. Of course, everything shown here was just an example, and using this tool on other shapes will give you slightly different effects, but its underlying principles will always stay the same. That's all I had for you. I wish you success in your future projects. See you, and stay tuned for more content to come!