And the best part is, when you change the size of the first polygon sketch, the sizes of all the other features will automatically change as well (thanks to the Equations). Well that’s all! You’ve just created a perfect Dodecahedron and hopefully learned something about the Equations feature. SolidWorks has to know that the height of the Cut Extrude is equal to the height (D1) of Extrude1. Go to: Insert > Cut > Extrude or click at the Extrude Cut icon Place the new Polygon exactly between the previous polygon as shown in the pictures Select the blue surface and create a sketch by clicking on the 2D Sketch iconĬlick at the Normal To button to look perpendicular on the blue surfaceĬlick at the Hidden Line Visible box in the ViewManagerĬonnect the circle with a point of the previous polygon as shown in the pictureĬhange the number of corners into 5 as shown in the picture. SolidWorks has to know that the “Height” is equal to the height (D1) of Extrude1.Īs you can see in the picture, the height of the Extrude changes into 130.9mm. Go to: Insert > Boss/Base > Extrude or click at the Extrude icon Now SolidWorks knows that the “Height” of the Dodecahedron is the Dimension of Sketch1 x the Ratio. NOTE: For “ ” you can click at the dimension of Sketch1 instead of writing “ ” The Height of the Dodecahedron has to be the Ratio x the dimension of Sketch1 Now SolidWorks knows what the value of the “Ratio” is. Go to Tools > Equations or click at the Equations button With the Equations feature you can automate complicated relations between the size of the construction circle and the height of the Extrude. When the dimension of the circle is 100, the height of the Extrude has to be Height Extrude x Sin(18)+1 There has to be a Ratio between the dimension of the Polygon and the height of the Extrudeįor a Dodecahedron this ratio is 1 : Sinus( 18)+1. Make the sketch fully defined as shown in the picture Select the top point of the polygon, hold down the Control key and select the circleĬlick at the Coincident relation feature to add a relation between the polygon and circle Make sure that the top point of the Polygon is connected with the construction circle Go to Tools > Sketch Entities > Polygon or click at the polygon iconĬhange the number of corners into 5 as shown in the picture Go to Tools > Sketch Entities > Circle or click at the circle iconĬreate a sketch which starts at the Origin.Ĭhange the dimensions of the circle into 100 mm by clicking at the dimension buttonĬlick at the Circle and change the Solid Line into a Centerline by clicking at the For Construction option The display changes so the Top plane faces you. Select the Top Plane in the feature tree (menu at the left side) and create a sketch by clicking on the 2D Sketch icon Open a new part with model units set to millimeters Click here for more information about the new equation feature. The equation feature is changed dramatically in SolidWorks 2013. NOTE: This tutorial is made with SolidWorks 2010. Enjoy it and don’t forget to share this tutorial with other SolidWorkers! Below I will show you exactly how to model a Dodecahedron with only two features in SolidWorks! I will also teach you how to use the Equations feature. His SolidWorks model is so interesting that I’ve written a tutorial about it. It has 20 vertices, 30 edges and 160 diagonals.” – WikipediaĪfter a little research I discovered a SolidWorks model of Azrael from Grabcad. It is composed of 12 regular pentagonal faces, with three meeting at each vertex, and is represented by the Schläfli symbol. “In geometry, a dodecahedron is any polyhedron with twelve flat faces, but usually a regular dodecahedron is meant: a Platonic solid. I didn’t even know what a Dodecahedron was… A week ago I received an email from Jose Diaz with the question how to model a Dodecahedron in SolidWorks.
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