You can use the Replace Face tool to extend or trim a selected face to match another face. Replace Face can be a useful tool to modify flat planar faces generated by tools such as extrude. It can also be an effective method for matching the faces of connected bodies.
To use the Replace Face tool:
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Go to Tools > Replace Face.
For other methods of accessing this tool Accessing tools. -
Select the face or faces you want to replace. Faces to replace will be highlighted in blue and marked with the Replace Face badge.
Note: You can select the badge to redefine a face as a face to be replaced or a target face. -
Select the replacement face. This face will be highlighted in purple and marked with the target badge. The face you are replacing will be extended or trimmed to meet the target face.
Note: You can select the badge to redefine a face as a face to be replaced or a target face.
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If necessary, adjust the Other Side setting at the left.
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To finish, Select Done.
Learn more by watching the video below: