The liners are very thin and bow inward in the mold, which is okay and was expected when I ordered. What I didn't expect was the have 1/2" or more space above the liner with the wood exposed. I mean, how hard is it to have the mold line up evenly with the liner? Due to this, you constantly pour soap between the liner and mold walls. I haven't been able to get even bars, which is a shame since I went ahead and purchased 3 sets. They're very difficult to use and clean, and unmold too. Don't recommend