Glass bottle has dark sides

[hqu15172 (Ryan Le)]

Hi All,

I tried many tutorials and searched a lot on Google but I couldn’t solve this glass-have-dark-sides problem.

I am trying to create a glass bottle, but it keeps having dark sides (left and right), when I changed IOR, it partially fixes this part but mess up another part ^^!

This is my blend file.

rollon-bottle.blend (3.8 MB)

Thanks All

[cgPixel (Mo'sArt)]

those are your friends:

increase max bounces for transmission/transparent/glossy

and you can cheat a bit by making the material fully transparent for shadow:

after this if you’re wondering why the bottle looks empty in the bottom. you have too solutions:

• delete the inside faces of the bottle that are touching the liquid.
• or scale the liquid a bit to go pass the interior faces (this one tested below)
  
  

[hqu15172 (Ryan Le)]

Thanks, I am testing on suggestions !

[hqu15172 (Ryan Le)]

Hi @cgPixel, I removed the inside faces of the bottle and apply different materials on different parts, and it works, thanks so much !

[nezumi.blend]

You may also want to ensure the glass bottle is set to shade smooth with normals.

Original render:

Setting:

After render:

[hqu15172 (Ryan Le)]

Hi Nezumi, I was able to fix it after flipping the normals, thanks !