As with any building project, it is 80% inspiration. And in this case, the inspiration was wedding cake columns. Along with the 80% inspiration, there is 40% painting, 27% foam cutting and a pinch of gluing. leaving us somewhere in the neighborhood of 148% effort. I never was good at math.
The ends of the columns need to be filled in. I took small scraps of paper to fill most of the columns, then filled the last 1/4 inch with carpenter’s filler. You will need the paper inside to prevent the filler from getting pushed inside the columns. A test fitting here shows a good fit.