Next I epoxied the rear centering ring to the thrust ring. You can see that in the background of this photo. And in the foreground are the fins, after I used 100 grit sandpaper on a handheld electric sander to round the edges. I also rounded the trailing root corner of the tab, to allow it to clear the slight fillet of epoxy between the centering ring and motor tube.That’s all for now. I’m taking it along to NYPower, in case I get some time to work on it there.