I am getting some pretty bad artifacts, but I have never done this type of bake before*
I usually am baking normals from High poly to low, but I now baking Edge wear mask from
Normal size to normal size *
does my mesh I am baking to need to be inside the mesh I am baking from?
You’re baking a texture. No need to have 2 objects for this. Since Diffuse is a long waiting game i’d suggest substitute Diffuse by Emit and Bake Emission). Distortions you see could be caused by what looks like nogons too, btw.