# Sheet Metal
# Mirrored Edge Flange
Edge flange feature supports mirroring, enabling quick creation of symmetric sheet metal features and improving modeling efficiency.
How to use：
Open the Mirror command.
Select the mirror plane.
Select the edge flange feature to be mirrored. Ensure that there is a valid sheet metal edge available at the symmetric position relative to the mirror plane, which can be used to generate the edge flange.
Click OK to complete the feature creation.
# Stretch cut equal to thickness
When extruding to cut a solid, using the "equal to thickness" option allows you to quickly create a cut with a depth consistent with the sheet metal thickness.
How to use：
Open the document containing the sheet metal body.
Open the Stretch Cut command.
Select the sketch and the feature to be cut.
Check the "Equal to Thickness" option; the depth of the stretch cut will automatically be set to the sheet metal thickness.
Click OK to generate the feature.
Note：After generating the sheet metal body, a "Thickness" variable with a sheet metal icon will appear in the variable manager, and the thickness of the cut will match the value of this variable.
# Corner Relief
Added rectangular-oval type for edge relief slots, meeting diverse application requirements.
How to use：
Open the "Edge Relief Slot" command.
Select the sheet metal to be modified.
Click "Collect All Corners" to automatically pick corners, or manually select the bend faces on both sides of the corner and then click the "Generate New Corner" button to manually pick the corner.
Select the picked corner in the dialog box.
Change the relief slot type to "Rectangular-Oval".
Set other parameters and options as needed.
Click OK to generate the feature.
Rectangular-Oval Related Options and Parameter Description:：
Slot Length/Width: Controls the length and width of the rectangular-oval shape, respectively.
Center on Bend Line: When checked, the slot is positioned at the center of the bend line.
Ratio to Thickness: When checked, a ratio input box is displayed, allowing you to control the slot's length or width based on a proportion relative to the sheet metal thickness.