How to model a diffuser in solidwork?

Tutorial by Zhou Xiaochen

Check "Circular Sketch Pattern" under "Sketch tool". With this function, this problem should be easy.
Here's a very simple demo using the data you provided.

  1. Step 1:

    Use your data to create the first one and use "Circular Sketch Pattern". Set the numbers of copies to 11.

  2. Step 2:

    Trim to get the sketch below. Then it should be nice and easy


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