bsplinecurve w1 3 2 -1.0 4 1.0 4 0 0 0 1 2 10 0 1 4 6 0 1 10 0 0 1 mkedge w1 w1 polyline w2 10 0 0 0 0 0 wire w w1 w2 mkplane w w prism s w 0 2 10 tscale s 0 0 0 SCALE1 explode s E blend result s 0.5*SCALE1 s_1 0.5*SCALE1 s_6 set square 33852.2