I am new here though I have been a Blender user and supporter for about 6 years most of which were using Blender version 1.78 because I was limited to my PC performance.
I recently purchased a new PC over $1200 mainly so I could use the latest Blender version 2.83 and found I had a huge hurdle to overcome learning Blender all over again. I find some new features complicated or buggy such as the “Collections” in the Hierarchy, but that is not what my topic is about.
Though I should mention from the start of using 2.83 I ran into problems with BlenderGuru’s “Donut Tutorial” using Displacement to get a realistic bump texture on the donut. Blender would not render the donut at all in Cycles. I was discouraged to say the least.
Currently I have been working on an animation for a story that I would like to use in an augmented reality app.
I needed to create a nuclear explosion and approached the concept using the “Smoke/Fluid” simulator which would not render as well. I later discovered I could fake a mushroom cloud using Volumetric Clouds created with Metaballs. It worked but I was not satisfied with the animation and decided to restart the construction of the mushroom cloud with another method I discovered in a tutorial entitled “Make Super Satisfying Animation in Blender Eevee” Which shows a Torus like object twisting inside out sort of speak.
I thought I could use this method with volumetric clouds to create the rolling mushroom cloud effect without Metaballs.
It actually worked and I was super pleased with how things were turning out, until I tried to add similar effect with smoke rings that you may see associated with mushroom clouds. Suddenly my mushroom cloud that was working great previously, now looked like a giant foggy cube, and I can not get it back the way it was. I had saved my file after I created the smoke rings and overwrote the previous file before I created the smoke rings, so no returning to better the situation.
I know I have seen tutorials explaining the issues with creating volumetric clouds with shapes and they result in rendering as cubes, though for some reason I had got around that obstacle, for a few days until I created the smoke rings. I tried everything from deleting the smoke rings to re creating the nodes for the mushroom cloud and it still does not give me any satisfying results.
I have spent about 2 or 3 weeks on this animation and all is lost. What could be the issue?