Rounded corners on a tetrahedron model

Hi all. I need to build a tetrahedron that has all rounded edges. I’ve tried using the curves tool to create a rounded edge and then using the follow me tool, but that only works on one edge, once I repeat the action on a second edge, I run into issues at one of the corners of the tetrahedron. I am at a loss for how to create this shape. Any pointers? Many thanks!

You can use the Round corners plugin.

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