Regular tetrahedron with 123D Design

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123D Design Tutorial: Modeling a Regular Tetrahedron In this tutorial, we will learn how to create a regular tetrahedron in 3D using 123D Design. This software is a powerful tool for designers and makers alike, offering a wide range of features and functionalities. Step 1: Creating the Base Shape Begin by creating a new project in 123D Design. Select the "New Project" option from the start page and choose the desired units of measurement. For this tutorial, we will be working with millimeters. Next, create a new shape by selecting the "Shape" tool from the toolbar. Choose the "Polygon" option and select the number of sides you want your tetrahedron to have. In this case, we need 4 sides, so choose the "Quad" option. Step 2: Extruding the Shape With the base shape created, it's time to extrude it into a 3D object. Select the "Extrude" tool from the toolbar and click on the polygon to activate the feature. Choose the desired height for your tetrahedron by dragging the slider or entering a value in the input field. Step 3: Creating the Apex To create the apex of the tetrahedron, select the "Point" tool from the toolbar and place it at the top of the extruded shape. This will serve as the anchor point for our next step. Step 4: Extruding to the Apex Select the "Extrude" tool again and click on the polygon to activate the feature. This time, choose the apex point you created in Step 3 as the destination point. The software will automatically extrude the shape to the desired height. Step 5: Refining the Shape With the tetrahedron created, it's now time to refine its shape. Select the "Edit" tool from the toolbar and use the various tools available to adjust the size, position, and orientation of the object. Tips and Variations * To create a more complex design, try using different shapes or combinations of shapes to create the base of your tetrahedron. * Experiment with different materials and textures to add visual interest to your design. * Use the "Sweep" tool to create a curved surface on your tetrahedron. Conclusion In this tutorial, we learned how to create a regular tetrahedron in 3D using 123D Design. By following these simple steps, you can create a complex and visually appealing object that showcases your design skills. With practice and patience, you can master the art of 3D modeling and create stunning designs that amaze and inspire others. Note: This tutorial is intended for beginners who are new to 3D modeling and design. If you're already familiar with 123D Design or other CAD software, feel free to skip ahead to the advanced sections!