Unbevel

Unbevel collapses beveled faces, created by Edge Bevel or Edge Chamfer, between two selected edge loops.

To use the tool:

1. In Edges selection mode, select the two edge loops that surround the faces you want to unbevel:
   

   

2. In the modeling toolbar, click the Edge sub-tab, and click Unbevel.
   
3. A dialog prompts you to select the Unbevel Mode. You have the following three options:
   

   Convergence	Collapses beveled polygons into sharp edges.
   Flat	Turns beveled polygons into a single flat polygon.
   Square	Removes beveled polygons and creates square ones.