SOLIDWORKS Sheet Metal Sketch Transformations

SOLIDWORKS Sheet Metal includes a Sketch Transformation folder in the Flat Pattern feature when a sketch is added to a face that is not the fixed face (i.e. a face that moves when the piece is flattened).  Within this folder is a derived sketch of the original so it stays on the face as it flattens.  You cannot edit this derived sketch as its shape/position/size is controlled by the parent sketch.

SOLIDWORKS Sheet Metal Sketch Transformation Folder with Derived Sketch

With a part in the folded state, a sketch is applied to a face that is not fixed when it flattens.

SOLIDWORKS Sheet Metal Sketch on Non-Fixed Face

Now when this part is flattened, the Sketch Transformation folder and derived sketch is added to the new location of the face.

SOLIDWORKS Sheet Metal Sketch Transformation

NOTE: If a sketch was created on the non-fixed face and then used to create a feature like a Cut-Extrude, there will be no Sketch Transformation folder as the geometry of the cutout will follow the fold/unfold process.  Typically sketches are added by themselves if a user wants to have etching or markings without a feature that can be included in the DWG/DXF export or drawing.

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