Got it carrots! Thank you, I will be testing it out. Thanks!   

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Windows, 2026-06 (RC2) signed installation files 3DCoat-2026-06.exe 3DCoatTextura-2026-06.exe 3DCoatPrint-2026-06.exe

Hello Carrots, Thank you for your explanation about Surface Layers. I understand how they work now.   I have one additional question. When a Layer is hidden, some brushes such as Smooth, Snake Clay, and Freeze show the message "Hidden layer is selected" and cannot be used. However, other Surface brushes can still be used normally even when the Layer is hidden. Could you please explain why only some brushes check the Layer visibility state, while other brushes can still work with a hidden Layer? I would like to understand the difference in behavior between these brushes.

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Each individual layer saves the changes you make. You can then make the layer invisible to turn off  individual details or change their intensity.

Thank you for your explanation. I understand that Layers in Surface mode contain important information, so I will be careful when managing or deleting them. I appreciate your help and the tutorial.

The connection lines don't connect the first time they're used; they connect on the second attempt. I duno if it is from my side only

Sorry, but could we have sliders instead of these tiny X's? Sometimes it's really hard to select them for clicking and dragging L<>R  //edit something like this by ex

I don't have an answer for that, honestly I don't know. Be careful about deleting any layers; all operations performed in Surface mode are recorded in Layers.  

The issue has been resolved! You mentioned the location of the Layer at the beginning, but I misunderstood it as a different place and was checking the wrong location. I apologize for the confusion. As you pointed out, I made the hidden Layer visible, and the Smooth brush is now working normally. I am sorry that my misunderstanding caused you to spend so much time helping me investigate this issue. Thank you very much for finding the cause and for patiently helping me. I truly appreciate your time and support. However, I still have one question. I find it a little strange that other Surface brushes such as Clay worked normally, but only the Smooth brush showed the "Hidden layer is selected" error. Does the Smooth brush check the Layer visibility state more strictly than other brushes? I learned a lot from this experience. Thank you again for your help!

About Smooth Tool All messages are gone when I unhide the Layer (pressing over the eye icon once)

@carrots Why, if the screen has more horizontal than vertical space, make the panels so large ?   Also some Panels only are open on Viewport, so it is difficult to organize the Layout

https://github.com/3dcarrots/3DCoat/tree/main/Scripts/cExtensions/PBRTiler   I’ve added it to GitHub; you can download it from there and easily install it by simply copying it to Documents\3DCoat2026\UserPrefs\Scripts\cExtensions\

This is such a great addon to 3DC! Please, keep it in your plans. Having this kind of repetition removing tool is fantastic. Definitely a great complement to the new textures done by nodes. I recently made some trims sheets in 3DC (will be uploading a tutorial soon) and the repetition was something to overcome. Great work to all the devs, I hope all the upcoming changes turn out well. I will download the new RC in a minute. Thanks! 

3DCoat 2026.06 RC2 Portable versions  3DCoat, 3DCoat Print, 3D Coat Textura - Nodes have been sorted, and noise and patterns have been separated into different folders. - Mandatory GLSL validation has been added after NodeGraph modifications. - Node system support has been added to the free version of 3DCoat Print, allowing anyone to generate voxel objects and patterns.

For now, I’ve removed this tool from the release; I’ll turn it into an extension and provide a link to it.

After that, I tried a few more things and found that the issue does not occur in a new scene. I also imported the model that had the problem into a new scene, and the Smooth brush worked normally there as well. I also checked my GPU and system environment, but it does not seem to be related to this issue. So, I was able to continue working by moving the model to a new project. I still do not know the exact cause, but it may have been related to the original project file or some temporary inconsistency in the project. However, this is only a possibility and I cannot say for certain. Thank you very much for taking the time to help me investigate this issue.

Yes, that is the correct project file.   I was surprised that the issue did not occur on your side. Thank you for taking the time to check the file. I am using 3DCoat version 2025.17. I have attached another screenshot showing the current situation. As you can see, the "Hidden layer is selected" message still appears in my environment when I use the Smooth brush. However, other brushes such as Clay and Relax Standard work normally. For reference, my system specifications are: OS: Windows 11 GPU: NVIDIA GeForce RTX 3050 Laptop GPU CPU: 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz RAM: 16GB Next, I will try resetting the 3DCoat settings and testing in a clean environment to check whether the issue is related to my user settings or installation environment. I will also test whether the same issue occurs in a new scene with a simple object. I will share the results once I have checked. Thank you again for your help.

Is this the project ?   I can sculpt all the layers without issues, strange are you using 2025.17 ?