I'm experiencing very strange lines on my model. How can I fix this?


First, I take the head object from another model when I combine it appears strange lines do not blend with the face model.

Here's an example.


enter image description here

Head model:

enter image description here

I tried to merge with (Alt+M> at last) but I can't separate them again.

Here is the picture where I tried to merge:

enter image description here

I want a separate head model like this:

enter image description here

  • $\begingroup$ are you using the mirror modifier? $\endgroup$
    – susu
    Jul 8, 2020 at 3:37
  • $\begingroup$ nope bro, i dont using mirror modifire $\endgroup$ Jul 8, 2020 at 3:41
  • $\begingroup$ So please explain what you have, don't make it a guessing game. edit your question and explain what you did, also it would help to see the object in edit mode to understand the topology. $\endgroup$
    – susu
    Jul 8, 2020 at 3:59
  • $\begingroup$ how, i don't understand? $\endgroup$ Jul 8, 2020 at 13:13
  • $\begingroup$ please share your file: blend-exchange.giantcowfilms.com $\endgroup$
    – moonboots
    Jul 8, 2020 at 14:21

1 Answer 1


It look like you use 2.79 on one screenshot.

If you want to output it then somewhere from Blender - bake normal maps from models where all parts attached and vertices merged to each separate part. This normal map will be baked with taking in to account normal differences so it will compensate it and make detached parts look similar to full head.

If use just in Blender - use Normal Edit modifier on detached parts where pick full head model with merged vertices as reference object. Like on GIF - 2 separate sphere parts, " normal Object " is full sphere.

I mean use modifier for " non destructive " things. You can also just apply this modifier and not bake any normal maps.


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