# Spread
Flatten the selected bend of the existing sheet metal part.
Click the button to bring up the expand dialog box.
Control description:
1.Fixed surface: Select the fixed surface on the sheet metal to be unrolled.
2.Bend to unfold: Select the bend surface to unfold.
3.Collect All bends: After this parameter is selected, all bends of the sheet metal where the fixed surface resides are automatically selected.
Note: The fixed surface and the bend to be developed can be selected from the upper and lower surfaces, but not from the side.
← Sketch Bend Fold →