I have a project I want to work on which stalled out because I was having various problems with it. I want to make some forms that use a lot of arches, and morphing arches from one into another. Most of this would involve a simple gothic type arch (combination of two arcs) and ogee arch (combination of four arcs). Typically I want to transition from one of these to the other. Even though that should be very easy to do, I somehow kept getting tripped up by the math and having lots of unexpected problems. For instance I wanted these two arch types to transition from one to another but I wanted the bottom of all the arches to be coplaniar (but I was having trouble with that). Also I was doing the morphing by using tiny slices with linear_extrude and I seemed to have other issues because things weren't always coming out solid. I would like to play with other arch types (parabolic, hyperbolic-catenoidal) but mainly the first two I described, and mainly various types of transitions from one into the other. Additionally I would lay the arches along an odd path that is itself a group of arches. Any suggestions? <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>