Partially Unfold the Tube

Use the Unfold feature to pick the bends that you want to flatten. It is not necessary to flatten the model completely. It is possible to add the linear hole pattern. For this exercise, with the model unrolled in its current state, you will first unfold an additional two 90-degree bends.

1. As with the unrolled model that you created, you first identify a stationary face. Click the face shown in the following image.
   

   As soon as you select the face shown, the bends that can be unfolded relative to that face highlight:

   
2. Click to select the bend which forms the 90-degree corner closest to you:
   

   Once the bend is selected, the part previews in the unfolded state.

   

Next, you finish creating the Unfold feature.

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