I've ran into an boolean problem, and even after trying several solution found online, I cant get it to work.
I've made some letters converted them to mesh, duplicated them, made those duplicates thinner and now want to cut these from the thicker ones.
On two letters (S,E) it works. But the "T" doesn't. I transformed both T-meshes to quads, removed doubles and flipped normals, but still its not working.
I've uploaded the file, and would be glad if someone could explain to me, how to fix that.: http://www.lyzarr.com/stuff/help.blend