I have never been happy with the plastic roofs supplied with the carriage kits I build because plastic roofs look - well - plastic!
I prefer to make my roofs from brass, which looks better to my eye and allows me to solder torpedo vents, gas lights, etc. in place. I have had no problem rolling brass roofs for the four-wheel and six-wheel stock I usually build but my rolling bars are not long enough to roll the 209mm long roofs I need for the bogie clerestory stock I have recently begun building. I have tried squeezing the roofs in a vice between a round bar and a piece of rubber but all I achieved was to produce creases in the roofs.
Can anyone tell me whether there are rolling bars on the market long enough to produce roofs for bogie carriages? Alternatively, can anyone suggest another way of producing brass roofs for bogie carriages?