ellipse w1 0 0 0 15 10 mkedge w1 w1 0 pi/2 trotate w1 0 0 0 1 0 0 90 polyline w2 15 0 0 25 0 -10 0 0 -10 0 0 10 orientation w2 R wire w w1 w2 revol s w 0 0 0 0 0 1 360 tscale s 0 0 0 SCALE1 explode s E mkevol result s updatevol s_1 0 1*SCALE1 1 2*SCALE1 2 1*SCALE1 buildevol set square 484801