To all that are wanting to know about cones. They are simple to figure. They are simple to lay out. That is if you all payed attention in math class. To those of you that didn't....give up now. I'll throw some basic equations up here after a while. I'm not going to teach you how to make sense of them. That's up to you. I'm also not going to tell what dimensions to build your pipe too. A good education is not cheap. A **** poor education from a student, is just that, a **** poor education. Ask someone else. I'm still trying to make sense of this stuff myself.