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    By Florentina Stirbu

    Inventor_-_Create_Flat_Pattern_from_imported_STEP_files_-_1.PNG

    Sometimes, Inventor cannot create a flat pattern from parts that were not originally made using Sheet Metal environment specific commands.

    In this example, this is a STEP file I would like to have a Flat Pattern for.

    Inventor_-_Create_Flat_Pattern_from_imported_STEP_files_-_2.PNG

    The first thing to check is if the Sheet Metal Default Thickness matches the thickness of the part:

    Inventor_-_Create_Flat_Pattern_from_imported_STEP_files_-_3.PNG

    However, adjusting the default thickness might not help.

    Inventor_-_Create_Flat_Pattern_from_imported_STEP_files_-_4.PNG

    If the Flat Pattern still cannot be created, the part can be rebuilt as shown in the video below:

    Steps:

    1. Create a surface body
    2. Remove the existing solid
    3. Thicken the surface body (using the Sheet Metal Defaults thickness value)
    4. Create Flat Pattern