Whilst plotting a reduced paper size and ‘Scale lineweights’ ticked the lineweights are not reduced?
Solution: Firstly you should know that you cannot scale lineweight in model space. You need to be in a layout view in order to be able to Scale lineweights. You probably have chosen ‘Fit to paper’. What you need to do is read the AutoCAD calculated scale then manually type this scale in. AutoCAD will then scale your lineweights.