VTube allows each bend to have a unique tube elongation percentage - which is used to calculate correct CUT LENGTHS and UNBENDING LENGTHS Use the popup menus in either the PART SETUP or the XYZ grids to get to the setup window. A new checkbox is added at the bottom of Part Setup to allow this feature to be activated. If the checkbox is unchecked, then the single Tube Elongation % value is used to calculate elongation for all bends.