ReallyUglyStick

It depends on what your goal is as to whether the skin thickness is important or not. In my case I always like to know all the details while working on a project. You are correct that it may not be important to some, but others may think it interesting to know the difference between the skin thickness and overall thickness. The size of the corrugations needs to be known if like me you purchase basswood to use as filler strips to prevent the plastic from crushing at screw locations. I find it much faster to buy the 1/8 square or the 1/8 x 3/16 basswood strips instead of cutting them from sheet wood. I build a lot with coroplast, about three or four Stamps per week, and I guess this saves me more time than anything.

I am retired now, but my profession was a technical teacher, electronics professor, for thirty-five years. I guess I do tend to look at everything from the technical end by force of habit.