Butt Welding in Knuckles

Butt bevel codes, defined for a seam along a knuckle line, can be automatically re-calculated in a way that the knuckle angle is taken into consideration when presenting the bevel angle. The adjustments to the bevel angles are, by default, made equally on the two involved parts. By defining the environment variable BEV_NON_SYMM_KNU to any value it is possible to get the bevel angle adjustments done on only one of the involved parts, for example, so that the bevel is kept on a horizontal plate.