HO Scale cyclone

This is built on a 1920s design used on a large concrete grain elevator in Vancouver's harbour.  It is scaled from proportions as actual measurements are unavailable.  Please notice the upper pipe vent is open - not all the way, but deep enough to create a nice effect.
As a printed part it should show discernable seems where the various seets of metal overlap and join.  Hard to say whether the print will be flawless; i'd anticipate having to do light sanding with 400 wet and dry sandpaper.
If rivets are required, you will add them with archer rivet decals.