I'm modeling a mirror. I created this frame by extruding planes for the outside part and then connecting both holes from the front and the back. I used and applied a mirror modifier for the Y axis.
Everything looks good until I render the file, it shows a strange line as you can see below in the screenshot. I can solve this by using a Subdivision modifier but then I lose the sharp edges. Tried adding more edge loops and beveling but it seems I'm missing something.
Is there anything I can do to avoid these artifacts when rendering?