JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Curve Handlebar Used to modify the shape of a B-spline curve by interactively adjusting the location of a point on the curve, or the tangency direction at that point. You can access this tool from the following: Ribbon: Modeling > Curves > Modify Curves Toolbox: Modify B-spline Curves Key-in: MODIFY HANDLEBAR To Modify a B-spline Curve Using Handlebar Editing Parent topic: Modify B-spline Curves Toolbox