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I'm completely new to blender, I'm trying to create a simple label for a product as an exercise.

Drop shadow removal from label

When I use the shrinkwrap modifier to the face of the object in Cycles I get a drop shadow that doesn't appear in Eevee.

I have tried UV Unwrapping as well, and I get the same result.

Q: Is there an easy way to remove this shadow for the label?

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  • $\begingroup$ There is a problem when you add two surfaces on top of each other. It is called Z-fighting. Read blender.stackexchange.com/questions/155086/…. instead of adding a new mehs on top the other use Textures and masks, as sugested below. $\endgroup$ – Pullup Jun 6 at 15:44
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The more direct fix is to make your outer material have a mask between the metallic label, and the glass or whatever sub-material it lays upon. This also lets you skip the Shrinkwrap modifier because it uses the UV coordinates to wrap the texture around the object.

For example:enter image description here

This will blend the Metallic and Color Principled shaders depending on the strength of your mask. In my case, I had a zig zag pattern lying around:

enter image description here

This way you have less geometry, you have very sharp control over the position & pattern using the same image texture as before, and you can make changes on the same material graph.

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The easy fix:
enter image description here

Do that for your logo. However you should really consider rendering out your logo and use it as a texture on the bottle, you'll have fewer polies and less problems.
The reason this didn't happen in Eevee btw.: Eevees shadows are less precise and only get casted from lamps, not environment or bounced light. They either weren't created or so small that they disappeared.

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  • $\begingroup$ i did try this unclicking this box and it made no difference to the render however i will look at adding as a texture. Many thanks for taking the time to reply mike $\endgroup$ – Mike Nicholas Jun 6 at 9:21
  • $\begingroup$ thanks this worked - the issue was caused by the inner liquids IOR setting being too high appreciate your input Frederik $\endgroup$ – Mike Nicholas Jun 6 at 10:00

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