I'm using Solidworks 2014.
I'm folling the tutorial on "Opening the Model and Inserting a Forming Tool".
When I drag in the louver I get the question, "Are you trying to make a derived part?" - I choose Yes (This is not mentioned in the tutorial)
I"m was watching the video on YouTube, "
Welcome to SolidWorks forums Ed.
This should help you to fix the issue: Making your FORM TOOL behave properly
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