Fitzy and Jay, to be honest, I let the pipe maker understand the engineering of the pipe. I only know minimally what he is talking about until I get further in my pipe making and need to get my head around that aspect. If that video helps, I next recommend that you commission a flake pipe from Tim Thorpe. Perhaps that is the final step that you are missing. His pipes really helped me tackle the fold and stuff method, and got me hooked on flakes. I give him a shape, he engineers around my requests, we are both happy.