1. can i default blender to use CUDA? Every time I start it I end up having to manually start cuda or it renders with the CPU. Slow!
2. let's say I make a circle, then scale it along am axis to make a oval. Say I scale a circle along the x axis by like half to make a long oval to be specific.
Now, let's say I need to extrude the edge outward or inward, doesn't matter. I'm extruding an oval. Now the issue is that when I extrude it and then, say, try to make a groove along the edge my groove will wide at the long ends that it would be at the sides. Is there any way to extrude is to a groove would be evenly wide along the whole perimeter?