Hello, I am creating a component that is a barrel diffuser. The diffuser has 4 sloped sides. I have been trying everything I know to get these slopes to look correct. I’ve used the move tool on different edges and experimented with Solid Tools as well. No luck I included pictures of what I’m going for and the .skp file. In the .skp file, the center line on the z axis is the depth it needs to be. If anyone has any ideas on how to achieve this or can help out, it would be very much appreciated. Thanks!!

I experimented with this a bit, but it hasn’t solved my problem yet. The angles are different. I included the actual photo of what this needs to look like. Any advice? Thanks

If the elliptical edge is supposed to be 4’ (48") in length … then I got one solution (Diffuser A).

But if the height of the face (on the angle) is supposed to be 5 1/2" … then I got a slightly different solution (Diffuser B).

Regardless … both were derived using nothing but native SketchUp tools.

Extrude the circular section with the 5" height … then find (by successive approximation) the elliptical curve that has the correct total length (A) … or correct height (B). Then draw a plane at the appropriate angle … and intersect it with the original circular section.

But since the intersection of a plane with a cylinder is an ellipse, a more precise, deterministic method would have been start with the diameter of the cylinder and the length of the elliptical edge … and then to have mathematically calculated the angle of the intersecting plane … and then to have drawn the intersecting plane at that angle in SketchUp … etc. But that seemed a bit of overkill for a model that is dimensioned only to the nearest 1/16" … and this is a SketchUp forum … not a math class.