in the photo's below you can see the top of a column and then a molding that slides down from the column top. the top third of the column is tapered so the molding easily fits over the column and as it slides down it gets tighter and tighter. Gagan made this is the shop. the small molding is one piece, I'm not exactly sure how he made it but it should be noted that the inside cut of the molding is at an angle as to fit snugly to the column on both the top and bottom edge. Nice work Gagan, we can always count on you.