please help me to solve reflection on edges of polygon.

[Anonymous]

after doing proboolean on extruded square and lines (sweep command used on lines to make it solid form to subracct it from box) i get black lines and after rendering it into scenes i get reflections on that subtracted surfaces. please help.

[BenBisares]

Hard to tell from just the screenshots but my first guess would be that the smoothing groups are not assigned correctly due to  the way the object was created. I would try selecting all the polygons and then clicking on "Auto Smooth"