Subdivision surface with sharp edges

Support Modeling
1

I tried to make a smooth surface by subdivision function, however it modified the object like this… How can I use it to generate a object without any sharp edges?

subdivision
subdivision2560×1040 229 KB

2

your topology must be bad, please show the wireframe

3

圖片
圖片2560×1040 294 KB

4

maybe you have overlapping vertices? try an Alt M > Merge By Distance
if it doesn’t work please share your file: https://pasteall.org/blend/

5

uploaded…

6

you need to share the link :wink:

7

head1.blend (786.5 KB)

8

you have flipped normals (as seen below), so go in Edit mode, select all, press Alt N (or Mesh > Normals) > Recalculate

1
1816×701 94.9 KB

9

that’s work! Thank you very much!