How to Modify the Topology of Simple Primitives using SelfCAD
In 3D modeling, topology plays a crucial role in determining not only the visual quality of an object but also its flexibility, performance, and suitability for further editing or animation. Even simple primitives, basic shapes such as cubes, cylinders, and planes, can be transformed into complex and functional models through thoughtful topological modification. SelfCAD offers an accessible yet powerful environment for performing these modifications, making it an excellent tool for beginners and intermediate designers alike.
This article explores how to modify the topology of a simple primitive in SelfCAD by using a bridge structure as a practical example. By starting with a basic shape and progressively refining its geometry, we demonstrate how edge loops, faces, and vertices can be manipulated to create smooth curves, openings, and structural details. Understanding these techniques helps designers gain better control over their models, resulting in cleaner meshes, improved aesthetics, and more efficient designs suitable for rendering, animation, or 3D printing
Follow up with the interactive tutorial at; https://www.selfcad.com/tutorials/6o5071352t175c432r652a616g6w6c1f6rf1
Once you launch the editor;
From the 3D Shapes category on the toolbar choose cube; Set width to 250, height to 45, depth to 40, position z to 250.
Tick the checkmark finalize cube
From the deform category on the toolbar choose taper; Set x to -22
From the modify category on the toolbar choose fillet; Set intensity to 2, level to 3
Click move on the toolbar; Click copy button to copy selected objects, Set z to -250
From the 3D Shapes category on the toolbar choose cube; Set width to 90, height to 10, depth to 500, depth segment to 15, position y to 75.
Tick the checkmark finalize cube
Click to activate edge selection; Click on highlighted region to select it
From the modify category on the toolbar choose fillet; Set intensity to 2, level to 3.
From the deform category on the toolbar choose bend; Set bending plane to back/front, y to -40
Click move on the toolbar; Click copy button to copy selected objects; Set y to 45, x to 73
Click scale on the toolbar; Set x to 29
From the 3D Shapes category on the toolbar choose cube; Set width to 20, height to 13, depth to 20, position x to 73, position y to 60, position z to 215.
Tick the checkmark finalize cube
From the modify category on the toolbar choose fillet; Set intensity to 2, level to 3.
Tick the checkmark to finalize fillet
From the 3D Shapes category on the toolbar choose cube; Set width to 15, height to 140, depth to 15, height segment to 20, position x to 73, position y to 70, position z to 215.
Tick the checkmark finalize cube
From the deform category on the toolbar choose twist; Set y to -360
Click on mesh 12 to select it. Click on mesh 16 to deselect
From the tools category on the toolbar choose copy offsets; Set y to 140, Click copy button to create copies.
Click on mesh 16 to select
From the edit menu on the top toolbar choose group
Click move on the toolbar; Click copy button to copy selected objects, Set y to 91, z to 72
Click on group 1(1), group 1, group 1(2), to select. Click on group 1(3) to deselect
Click copy button to copy selected objects; Set y to 60, z to -143.5
Click rotate on the toolbar; Set y to -180
Click on mesh 8(1) to select. Click on group 1(4), group 1(5), group 1(6) to deselect
From the tools category on the toolbar choose copy offsets; Set y to 155, Click copy button to create copies.
Click on all the groups to select
Click copy button to copy selected objects; Click move on the toolbar; Set x to -73
Click smooth button to enable smooth rendering
As you continue honing your design skills, remember that SelfCAD offers a wealth of resources to support your learning journey. To deepen your understanding and explore more advanced features, consider checking out the interactive tutorials (https://www.selfcad.com/tutorials) available on the SelfCAD website. The tutorials page provides a treasure trove of guides, tips, and tricks that cater to designers of all levels.
More structured learning experience can also be accessed at the SelfCAD Academy (https://www.selfcad.com/academy/curriculum/), https://www.youtube.com/@3dmodeling101, and 3D Modeling 101 series (https://www.youtube.com/playlist?list=PL74nFNT8yS9DcE1UlUUdiR1wFGv9DDfTB). This comprehensive resource offers in-depth courses taught by industry experts, allowing you to master the intricacies of SelfCAD at your own pace.
Top comments (0)