Bevelling sharp interior corners

Question

I am trying to model windows on a somewhat cylinder-shaped object and I cannot figure out how to satisfactorily bevel sharp interior corners of the areas around them. A screenshot of what I am trying to do:

Screenshot 1, before bevel

And when I try to just use the bevel tool:

Screenshot 2, after bevel

I've also tried using the bevel weight modifier and selecting the edges I want to bevel, but it only seems to work up to those corners, even though they seem to bevel when the modifier is applied to the entire object:

Screenshot 3, with bevel weight

So basically, how would I go about doing this?

I'm a beginner so I apologize if there's something really important I've missed. Thanks in advance!

@PGmath Yes, I tried that, but that didn't work either.. Thanks very much for the tip though. — Bespectacled Villager, Jul 15 '15 at 05:49
Ngons.. remove doubles.. you can see the little useless faces hiding there n the viewport. — ruckus, Jul 15 '15 at 14:41

score 1 · Accepted Answer · answered Jul 15 '15 at 04:06

1

If you are using a subdivision surface modifier, the easiest way to sharpen edges is with a loop cut and slide (Ctrl R)

enter image description here

This is where loop cut and slide is located

And if that doesn't work try adding creases to the specific edges

enter image description here

answered Jul 15 '15 at 04:06

geooot

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Bevelling sharp interior corners

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