JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Combine Surfaces tool Used to combine two or more B-spline surfaces that share common edges. The resulting element is a single B-spline surface. You can access this tool from the following: Ribbon: Modeling > Surfaces > Modify Surfaces > Stitch/Combine > Combine Surfaces Toolbox: Modify B-spline Surfaces Key-in: MERGE SURFACES To Combine Two B-spline Surfaces (Sharing a Common Edge) Parent topic: Modifying Surfaces