Hi Evren,

> Is there any script for rebuilding surfaces/solids like rebuild curve command?

No, not currently.

Why is it that you want to remove those edges in the first place? Is there a specific goal you have in mind?

It looks like your object there was created by using Sweep - on a path curve made up of multiple segments, Sweep will generate one surface segment to match each segment of the joined path curve.

If you want to avoid that kind of segmentation from being created you need to make your rail path curve to be one single long segment itself rather than being made up of multiple segments. The curve rebuild command can be useful for that.

- Michael