I've been trying to do a sketch of a triangle to revolve in the internal part of my hollow cylinder. I tried to sketch in section view and couldn't do it, so I came on this forum to look for solutions. Most people recommended using intersection curves which I've tried and managed to get the sketch profile I want. However, I wasn't able to use it to revolve about my axis to get my feature. Really hoping someone here could help me out! I've attached the file for easy understanding.