Alright, so you need a very high res mesh around 100 million polys. Then right click and export as... When dialog opens up set it 95 percent. It should not matter if you export from a volume or a surface. But thats really it. And it works perfectly if I use the top bar menu to do the same. Then I will export the mesh without decimating.

@Toxo Hello! Please describe the steps you take to get the glitches after decimation. I'll try to replicate it.

I think it's a bit to big to share here 3.5 GB. It happens with all large photogrammetry meshes, pretty much. But only in the decimate dialog I get when I export. If I do it inside of 3Dcoat it works fine.

I think cloning with symmetry would be a solution.

No but, can you share a video to see the issue ?

please share that project to take a look on my version

Hello friends! I have a voxel object that I wish to mirror, but I want the result of the mirror operation to be placed on its own separate layer and not automatically merged.  How do I achieve this? Thanks ! Joe

Installing 3d coat 2025 through Lutris(wine 10.0), it performs as good as the native linux version and even better and smoother, very stable by far. For both native linux version and wine installed,  'Incremental render' needs to be turned off to have good performance despite the description saying that turning it on provides large performance boost. If it's on, the cursor will get stuck at the beginning/end randomly of every stroke. Kinda weird.

Ok a bit more testing and it seems the decimation is still broken. But it still havent crashed yet, so thats good.    

Whenever I use stamp mode on the Plane Tool it doesnt cut the mesh like in the previous 3dCoat versions. Anyone else having this problem?

Thanks for the help.  I think I got what I needed.

Thanks, So far it's working better. No chrashes yet and the decimator is looking correct.

A function like this would nicely complement the Modeling->Sculpting workflow and be very useful when using Multi Res during Sculpting based on a modeled object in modeling room. Afaics, this is currently not possible in 3D Coat. So a user does not have precise control over thickness i.e. keeping an even thickness on objects when moving them around using Move Brush in Sculpt Room. https://help.maxon.net/zbr/en-us/Content/html/user-guide/3d-modeling/modeling-basics/dynamic-subdivision/dynamic-thickness/dynamic-thickness.html The equivalent in Blender is the Solidify Modifier, which stays intact during Sculpting.