Dark Areas in Poly Model

[Jet]

I am working on a model, and the model is completely poly modeling.

My problem is that I am getting Dark Spots on the model.

this is a rendered preview it renders like this.

please help

i want to use my new poly modeling skills but if i cant figure this out then time will make me go back to the thick bulky block modeling im used too.

thanks in advance. I dont have any missing vertices either.

 

Jet

[Vince_1972]

2 sided or modifier normal, unify geometry ?

 

Vince

[Jet]

this is it rendered with no materials

[CHE]

Select all polygons and go to the modify tab. Scroll down to the polygon properties rollout. In the smoothing groups click on clear all. That should fix your problem. Give it a try.

[Ricardo Eloy]

Are you using radiosity? If so, try a small mesh size. But it seems to me like a modeling problem, maybe faces missing or intersecting each other...

[Fran]

Not knowing where or how you modeled and rendered this, it could be a smoothing issue. It might be better to post a problem image in the forum for the program you used. If it's max, try clearing all smoothing groups from those surfaces.

[Jet]

YESS! THANKS YALL!

THAT FIXED IT. It was a smoothing issue.

what causes that, and this is probably a crazy question, but what are smoothing groups?

 

I am using 3dsmax 6.1

i modeled that in Max also, it is all polygons so far.

im modeling this building in Max completely as i am still trying to get away from 3d modeling in autocad.

thanks alot.

 

jet