Kitchen sink models from 3d Warehouse: Curved Geometry has ribbed lines

The models appear as normal withinin 3d Warehouse, but upon download/import, display the abovementioned problem.

I have been downloading Collada files.

I’m using Sketchup Free 2017 (ducks).

I can’t figure out how to correct the issue! Any help is appreciated.

Thank you,
Lance

https://help.sketchup.com/en/sketchup/softening-smoothing-and-hiding-geometry

Thanks for the great tip!

Unfortunately, using the ‘angle between normals’ slider mainly serves to reorient the shadows, or something- the ribbed lines remain unaffected. And same goes for the ‘smooth normals’ selection.

Is there anything else I could try?

Collada files can be troublesome. They often have a weird hard shell of edges that is difficult to remove, it’s like a second set of edges that are not attached to the faces.
But usually exploding the group will allow them to behave.
GIF 16-11-2024 12-50-54 PM

Wow, thank you for the great tip! It may test my ability and intelligence, but I am gonna give it a try. Your help is much appreciated!

(btw, you finding my exact sink is next level)

It worked! Thank you very much.