[Model] Having some TurboSmooth Problems...

[derg]

Hi guys,
I have been modelling on a little rifle and there's a section where I need a hole in the gun.
So I moved some vertices in the right postion and just deleted/extruded the polygons into the gun. Everything looks more or less fine but when I turn TurboSmooth on the following bug appears:


I think you can see what my problem is; so does anybody know how to fix this or where some supporting edges should be added?

[-kodiak-]

add an edge where the red line is and see how that works

[Tim270]

Yeah you need a supporting edge there and maybe one underneath if there is not one already.

[derg]

Yeah, but the edge needs to be very smooth (like the area in the front). If I add more supporting edges the originally smooth edge becomes quite hard. Too hard actually.

[DankE_SPB]

high-poly is terra incognita for me, but maybe something like this will work for ya