@Rosketch install the Sketchucation ExtensionStore (it is required for license management, anyway) and use it to install Curviloft and the required LibFredo6. Once they are installed go to Tools>Fredo6 Collection>Curviloft>License. [image: 1758372625336-screenshot-9_20_2025-7_47_46-am.png] In the license panel click on Purchase License. [image: 1758372646150-screenshot-9_20_2025-7_48_14-am.png]

This really isn't a feature request, it's a bug report. Here is a visual of what Rosketch is talking about. Two components in SU, the right one has been flipped along the red. When exported as an .stl the resulting file is unprintable, as shown here in red. [image: 6iYs_Stlexportfail..gif]

@Box thanks for testing... do you think, Trimble knows and will solve the Problem? @cotty thanks for Link posting Rosketch