I'm working on a job that has a ton of arches in the walls. A soffit along metal beams with 5 sections between the steel posts that are all arches. Doorways with arched tops. Arches in walls for displays. Arches everywhere. I've done arches in the past and most of them at this job are done. I made them out of plywood and to lay them out I used a piece of FRP paneling J trim that is flexible to get the shape of the arch and traced it. But after doing a dozen arches today there has to be a better way to lay these out. What are your tips or tricks for doing arched doorways, arches in the walls or soffits where the bottom is arched? Especially how you get the arched shape laid out? I was working by myself most of the day and some of the longer arches were a little difficult to get the shape laid out by myself. Are there any special tools to get the arch shape laid out on a sheet of plywood?