Although it may seem that there are many posts related to that, I couldn't find any tangible solution to my problem, based on the following images, I couldn't get the smooth surface for bronze arm rest curved support. I have tried followings modifications w/o success. This discrepancy also affects the light map creation.

1. Edge splitting,
2. Recalulate Normals
3. Change Auto smooth to 30d

AFTER THE MODIFICATIONS

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The problem is that your faces are triangles. Triangles are notoriously difficult to smooth-shade.