The max method should be cabable of baking texture of the model too. Just make sure you somehow keep the uvmap of the mesh. Then assign the textures to the model, and when you render, render an unlit image so it shows the texture. This will look incorrect from the view of the slicer camera but the outside voxels of the…
I tried to render the volume texture of a tree with the slice+cap method but as you said the vertical bark of the tree was almost completely invisible so I had to create an array of cylinders to simulate the bark and give shell modifier to the leaves so they don't look like sheets of paper. I don't think there is a…