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How do you add thickness to a scanned surface?

Question asked by Chai Lim on Jul 9, 2013
Latest reply on Jul 10, 2013 by Chai Lim

I know how to use the thicken function for surfaces that I have drawn myself, but right now I am working with a scanned surface. After importing the STL file, which is the outer surface of a pipe, I am having problems giving it a thickness, as the thicken function does not seem to work. Is it because of the format of the file, or do I need to post process it more before being able to assign thicknesses?