Quickly model a unique icosahedral knot ball in Blender 2.8.
Blender 2.8 Tutorial - Icosahedron Knot Math Art for printing or design
That was pretty cool - saw some techniques in there I haven’t used before.
I don’t see the Add Mesh extra object in my 2.8
That’s odd. Which build are you using? Have you found any other issues with Addons in your 2.8 candidate? If you decide to reinstall, it might be beneficial to completely remove the current version you have first instead of simply overwriting the files.
jeesh - didn’t occur that I haven’t updated in a while. I’ll give that a go.