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right now im modelling some glasses, and im having a problem with the "subdivision surface" modifier, basically it connects points i don't want to connect...

without subdivision surface: without subdivision surface:

and with subdivision surface: enter image description here

here the blenderfile download (mediafire)

i would really appreciate some help :)

edit: Thanks to Paul,

i got it working by removing the exchange the big face with smaller ones:

Woking

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    $\begingroup$ your topology is bad, why all these ngons, try to extrude with quads only, then you'll create some additional edge loops to sharp the angles you want. $\endgroup$ – moonboots Aug 22 at 12:03
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You have this huge n-gon (a face with more than 4 vertices) which is a problem when using subdivision surface (and more generally, it's a problem for pretty much everything else too).

enter image description here

From looking at the model I think you had a picture of the profile of the glasses, you then extruded a plane following the profile, then extruded the plane inward to get the thickness and then you just pressed F to fill the remaning hole. That's not going to work. You need quads everywhere. You can either fill each quad manually or try to bridge the loops, but this model is a bit messy.

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  • $\begingroup$ N-gons are not always bad. $\endgroup$ – Millard Aug 22 at 13:15
  • $\begingroup$ ok thank you for the help, i will try it later and tell you if it worked :D $\endgroup$ – Nissl Aug 22 at 14:11
  • $\begingroup$ it worked, thank you... $\endgroup$ – Nissl Aug 22 at 15:21

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