Drat, forgot to get the PVC cement! I had a can, but discovered it was rock solid. Well, it was 10 years old... I tossed it. But I meant to get new cement yesterday and forgot. I need to build the top of the base first, and that involves some combinations of fittings, so they need to be cemented and carefully aligned first. Can't do anything useful until that is done!
For my design, I have to put a 45 degree elbow into a 5-way cross piece exactly perpendicular, then cement in a bushing that changes the 1.25" PVC to .5" PVC. I think I want to make a jig to assure the correct angle... Perhaps clamping the 5 way into a bench clamp and having an upright to mark exactly 90 degrees. Or I could screw some blocks into cheap plywood horizontally. I'll have to look at both.
I can't decide how long the arch pieces will be until I have the top of the base cemented. The base is 7'. So the best arch top might be between 8' and 9'. But I want to see it physically before I start cutting the top .5' PVC pipe.
May be a couple days before I get around to that. The lawn is covered with leaves again, the boat is full of leaves, and I have more spent flowers to cut down for the year...