effect in accordance with this embodiment of the invention the acute right and obtuse angle bends are achieved by severing and removing segments of the molding strips as shown generally in fig3 and 7 respectively thus in order to achieve a continuous rounded external edge 30 in the bent molding strip a line of severance 31 is made along the line of demarcation 22 between the side portion 17 and the central portion 16 diagonal lines of severance 32 at an angle dependent upon the included angle to which the molding strip is to be deflected extend inwardly from the opposite edge across the side portion 18 and into the central portion 16 arcuate lines of severance 33 extend from the line of severance 31 to intersect the diagonal lines 32 with the portion thereof defined by the lines of severance 31 32 and 33 removed the molding strips of fig3 and 7 can then be deflected into the angular positions of fig4 and 8 respectively in the bent or deflected position the diagonal lines of severance 32 are brought together while the arcuate lines 33 form a continuous curve with which the line of severance 31 merges so that the side portion 17 forms a continuous curved band around the bend in the molding strip the ends of the side portion 18 and central portion 16 created by the diagonal lines of severance 32 as well as the walls created by the severance lines 31 and.