Yes, another testing/fine tuning thing.What I say: Use this thing to fine tune your profile(s).What I do: I 1st try what's stated above and I finally adapt my design.Now, you know... Do what I say not what I do.The OpenSCAD script is fully parametric.You can make as many "test units" as desired, each of them is L shaped, there's a "Initial thickness" parameter, another for the "thickness increment" between test units...Adjust parameters to the desired values, compile, print, fine tune/adjust design.