Blending or rounding connects surfaces with each other and trims their boundaries automatically. The rolling-ball method allows blending of multiple surfaces, regardless of their complexity. The radius may be fixed or variable.

The resulting compound of surfaces does not show the smallest gap. EUKLID CAD/CAM finds its way in even the most complex situations, blending the surfaces automatically. EUKLID CAD/CAM offers full access to the surface boundaries at all times. If necessary, you may easily extract boundary curves, e.g. to generate theoretical edges, or, if third party surfaces are involved, to repair them.Furthermore, you may define free, variable rounding of individual surfaces or groups of surfaces.