I am trying to create a scaled model of a drum. The bottom of the drum is 6in on one side and 8in on the other and there is a smooth angled path to connect the two sides. I tried replicating this by creating a helix around half of the base to the height that I need. This works but it keeps going past where I want it to stop, because the full sketched area follows the helix. For the first half I was able to just cut away the unwanted part, but when I did the second half the swept pattern merged into the first half and can not figure out a wat to remove it. I wanted to just cut through to the surface of the first sweep, but since it is now merged I can not do that. Does anyone know how I can fix this or an easier way to accomplish this task? Im going to try to attach a screenshot of what I am working with.